autoNumeric

The latest stable branch is always on `master`. Currently this is version [4.1.*](https://github.com/autoNumeric/autoNumeric/tree/master).
If you want to try the new features, you can check out the latest development version in the `next` [branch](https://github.com/autoNumeric/autoNumeric/tree/next).
That `next` branch can see changes in the API (check the [semver](http://semver.org/)), but is always fully tested for regressions.
For older stable versions, please take a look [here](#older-versions).
Alternatively, you can **use our [guide](doc/HowToUpgradeToV4.md) for upgrading from version `1.9`/`2` to version `4`.**

- Supports most **international** numeric formats and currencies
*(If the one you use is not supported yet, open an [issue](https://github.com/autoNumeric/autoNumeric/issues/new) and we'll add it as soon as possible!)*- Any number of different formats can be used at the same time on the same page.
Each input can be configured by either setting the options as HTML5 data attributes, or directly passed as an argument in the Javascript code - [On `` elements](#on-input-elements)Simply include **autoNumeric** in your html `

` tag.
No other files or libraries are required ; autoNumeric has **no dependency**.

0. ``` html
1. <script src="autoNumeric.min.js" type="text/javascript"></script>
2. !-- ...or, you may also directly use a CDN :-->
3. <script src="https://cdn.jsdelivr.net/npm/autonumeric@4.1.0"></script>
4. <script src="https://unpkg.com/autonumeric"></script>
5. ```

In another script

If you want to use AutoNumeric in your code, you can import the src/AutoNumeric.js file as an ES6 module using:

0. ``` js
1. import AutoNumeric from 'AutoNumeric';
2. ```

Then you can initialize autoNumeric with or without options :

0. ``` js
1. // autoNumeric with the defaults options
2. anElement = new AutoNumeric(domElement);
3. 
   
4. // autoNumeric with specific options being passed
5. anElement = new AutoNumeric(domElement, { options });
6. 
   
7. // autoNumeric with a css selector and a pre-defined language options
8. anElement = new AutoNumeric('.myCssClass > input').french();
9. ```

(See the available language list here)

You're done!

Note : an AutoNumeric object can be initialized in various ways, check those out here

In Web Workers

Some static AutoNumeric functions that do not access nor modify the DOM can be used in [Web Workers](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers) (ie. `AutoNumeric.format()`, `AutoNumeric.unformat()`, etc.).

In order to be able to use AutoNumeric in those web workers, you need to import the source file src/main.js, not the generated one found in dist/AutoNumeric.js. For instance, by importing the library like that:

0. ``` js
1. import AutoNumeric from '../node_modules/autonumeric/src/main';
2. ```

Doing this will allow your project Webpack configuration to compile it correctly (and use tree shaking as needed).

On which elements can it be used?

autoNumeric can be used in two ways ;

- with event listeners when used on `` elements or on `contenteditable`-enabled elements making them reactive (in a *read/write* mode), or

- without event listeners when used on DOM elements not having the contenteditable attribute set to true, essentially acting as a format-once-and-forget-read only mode.

#### On `` elementsWhen used on an `` element, you'll be able to interact with its value and get a formatted input value *as-you-type*, using the full power of autoNumeric.

Please note than due to browser constraints, only the following supported `` *types* are supported :

- text,

- tel,

- hidden, or

- no type specified at all

0. ``` html
1. <input type='text' value="1234.56">
2. <input type='tel' value="1234.56">
3. <input type='hidden' value="1234.56">
4. <input value="1234.56">
5. ```

Note : the number type is not supported simply because autoNumeric formats numbers as strings (ie. '123.456.789,00 €') that this input type does not allow.

On contenteditable-enabled elements

Any element in the following allowedTagList that support the contenteditable attribute can be initialized by autoNumeric.

This means that anywhere on a page, on any DOM element, you can harness the power of autoNumeric which will allow you to mask the user inputs.

Given the following html code...:

0. ``` html
1. <p id="editableDom" contenteditable="true">12345678.9012</p>
2. ```

you can initialize this `

` element with autoNumeric:

0. ``` js
1. new AutoNumeric('#editableDom').french();
2. ```

...and it will act exactly like an `` element controlled by autoNumeric.

On other DOM elements

You can use autoNumeric to format a DOM element value **once** on load.

This means it will then not react to any user interaction.

The following elements are accepted :

0. ``` js
1. const allowedTagList = [
2.     'b', 'caption', 'cite', 'code', 'const', 'dd', 'del', 'div', 'dfn', 'dt', 'em', 'h1', 'h2', 'h3',
3.     'h4', 'h5', 'h6', 'ins', 'kdb', 'label', 'li', 'option', 'output', 'p', 'q', 's', 'sample',
4.     'span', 'strong', 'td', 'th', 'u'
5. ]
6. ```

Tips:<br>

Since the `number` type is not supported, if you want to display a numeric keyboard when selecting an AutoNumeric-managed element in a mobile browser, you can use the input `tel` type.

In the future, you'll be able to add theinputmode="numeric" Html attribute in order to achieve the same effect.

Initialization

An AutoNumeric object can be initialized in various ways.

Initialize one AutoNumeric object

It always takes either a DOM element reference as its first argument, or a css string selector.
*Note: only one element can be selected this way, since under the hood `document.querySelector` is called, and this only return one element.*

If you need to be able to select and initialize multiple elements in one call, then consider using the static [AutoNumeric.multiple()](#initialize-multiple-autonumeric-objects-at-once) function

0. ``` js
1. anElement = new AutoNumeric(domElement); // With the default options
2. anElement = new AutoNumeric(domElement, { options }); // With one option object
3. anElement = new AutoNumeric(domElement, 'euroPos'); // With a named pre-defined string
4. anElement = new AutoNumeric(domElement, [{ options1 }, 'euroPos', { options2 }]); // With multiple option objects (the latest option overwriting the previous ones)
5. anElement = new AutoNumeric(domElement).french(); // With one pre-defined language object
6. anElement = new AutoNumeric(domElement).french({ options });// With one pre-defined language object and additional options that will override those defaults
7. 
   
8. // ...or init and set the value in one call :
9. anElement = new AutoNumeric(domElement, 12345.789); // With the default options, and an initial value
10. anElement = new AutoNumeric(domElement, 12345.789, { options });
11. anElement = new AutoNumeric(domElement, '12345.789', { options });
12. anElement = new AutoNumeric(domElement, 12345.789, 'euroPos');
13. anElement = new AutoNumeric(domElement, 12345.789, [{ options1 }, 'euroPos', { options2 }]);
14. anElement = new AutoNumeric(domElement, null, { options }); // With a null initial value
15. anElement = new AutoNumeric(domElement, 12345.789).french({ options });
16. anElement = new AutoNumeric(domElement, 12345.789, { options }).french({ options }); // Not really helpful, but possible
17. 
    
18. // The AutoNumeric constructor class can also accept a string as a css selector. Under the hood this use `QuerySelector` and limit itself to only the first element it finds.
19. anElement = new AutoNumeric('.myCssClass > input');
20. anElement = new AutoNumeric('.myCssClass > input', { options });
21. anElement = new AutoNumeric('.myCssClass > input', 'euroPos');
22. anElement = new AutoNumeric('.myCssClass > input', [{ options1 }, 'euroPos', { options2 }]);
23. anElement = new AutoNumeric('.myCssClass > input', 12345.789);
24. anElement = new AutoNumeric('.myCssClass > input', 12345.789, { options });
25. anElement = new AutoNumeric('.myCssClass > input', 12345.789, 'euroPos');
26. anElement = new AutoNumeric('.myCssClass > input', 12345.789, [{ options1 }, 'euroPos', { options2 }]);
27. anElement = new AutoNumeric('.myCssClass > input', null, { options }); // With a null initial value
28. anElement = new AutoNumeric('.myCssClass > input', 12345.789).french({ options });
29. ```

Note: AutoNumeric also accepts a limited tag list that it will format on page load, but without adding any event listeners if theircontenteditable attribute is not set to true

Initialize multiple AutoNumeric objects at once

If you know you want to initialize multiple elements in one call, you must then use the static AutoNumeric.multiple() function:

0. ``` js
1. // Init multiple DOM elements in one call (and possibly pass multiple values that will be mapped to each DOM element)
2. [anElement1, anElement2, anElement3] = AutoNumeric.multiple([domElement1, domElement2, domElement3], { options });
3. [anElement1, anElement2, anElement3] = AutoNumeric.multiple([domElement1, domElement2, domElement3], 'euroPos');
4. [anElement1, anElement2, anElement3] = AutoNumeric.multiple([domElement1, domElement2, domElement3], [{ options }, 'euroPos']);
5. [anElement1, anElement2, anElement3] = AutoNumeric.multiple([domElement1, domElement2, domElement3], 12345.789, { options });
6. [anElement1, anElement2, anElement3] = AutoNumeric.multiple([domElement1, domElement2, domElement3], 12345.789, [{ options }, 'euroPos']);
7. [anElement1, anElement2, anElement3] = AutoNumeric.multiple.french([domElement1, domElement2, domElement3], [12345.789, 234.78, null], { options });
8. [anElement1, anElement2, anElement3] = AutoNumeric.multiple.french([domElement1, domElement2, domElement3], [12345.789, 234.78, null], [{ options }, 'euroPos']);
9. 
   
10. // Special case, if a
    element is passed (or any other 'parent' (or 'root') DOM element), then autoNumeric will initialize each child `` elements recursively, ignoring those referenced in the `exclude` attribute
11. [anElement1, anElement2] = AutoNumeric.multiple({ rootElement: formElement }, { options });
12. [anElement1, anElement2] = AutoNumeric.multiple({ rootElement: formElement, exclude : [hiddenElement, tokenElement] }, { options });
13. [anElement1, anElement2] = AutoNumeric.multiple({ rootElement: formElement, exclude : [hiddenElement, tokenElement] }, [12345.789, null], { options });
14. 
    
15. // If you want to select multiple elements via a css selector, then you must use the `multiple` function. Under the hood `QuerySelectorAll` is used.
16. [anElement1, anElement2] = AutoNumeric.multiple('.myCssClass > input', { options }); // This always return an Array, even if there is only one element selected
17. [anElement1, anElement2] = AutoNumeric.multiple('.myCssClass > input', [null, 12345.789], { options }); // Idem above, but with passing the initial values too
18. ```

Note: Using an array of option objects / pre-defined names will always merge those settings. The resulting setting objet will then be applied to all the selected elements ; they will share the exact same settings.

Options

Multiple options allow you to customize precisely how a form input will format your key strokes as you type.

You can check what are the predefined choices for each option as well as a more detailed explanation of how they work on the official documentation page.

| Option           | Description | Default Value |

| :----------------: | :-----------:  | :-----------:  |

| allowDecimalPadding | Allow padding the decimal places with zeros. If set to 'floats', padding is only done when there are some decimals. | true |

| caretPositionOnFocus | Determine where should be positioned the caret on focus | null |

| createLocalList | Determine if a local list of AutoNumeric objects must be kept when initializing the elements and others | true |

| currencySymbol | Defines the currency symbol to display | '' |

| currencySymbolPlacement | Placement of the currency sign, relative to the number shown (as a prefix or a suffix) | 'p' |

| decimalCharacter | Decimal separator character | '.' |

| decimalCharacterAlternative | Allow to declare an alternative decimal separator which is automatically replaced by the real decimal character when entered (This is useful in countries where the keyboard numeric pad has a period as the decimal character) | null |

| decimalPlaces | Defines the default number of decimal places to show on the formatted value, and to keep as the precision for the rawValue. This can be overridden by the other decimalPlaces* options. | 2 |

| decimalPlacesRawValue | Defines how many decimal places should be kept for the raw value. This is the precision for float values. | null |

| decimalPlacesShownOnBlur | The number of decimal places to show when unfocused | null |

| decimalPlacesShownOnFocus | The number of decimal places to show when focused | null |

| defaultValueOverride | Helper option for the ASP.NET-specific postback issue | null |

| digitalGroupSpacing | Digital grouping for the thousand separator | '3' |

| digitGroupSeparator | Thousand separator character  | ',' |

| divisorWhenUnfocused | Defines the number that will divide the current value shown when unfocused | null |

| emptyInputBehavior | Defines what to display when the input value is empty (possible options are null, focus, press, always and zero) | 'focus' |

| eventBubbles | Defines if the custom and native events triggered by AutoNumeric should bubble up or not | true |

| eventIsCancelable | Defines if the custom and native events triggered by AutoNumeric should be cancelable | true |

| failOnUnknownOption | This option is the 'strict mode' (aka 'debug' mode), which allows autoNumeric to strictly analyse the options passed, and fails if an unknown options is used in the options object. | false |

| formatOnPageLoad | Determine if the default value will be formatted on initialization | true |

| historySize | Determine how many undo states an AutoNumeric object should keep in memory | 20 |

| isCancellable | Determine if the user can 'cancel' the last modifications done to the element value when using the Escape key | true |

| leadingZero | Controls the leading zero behavior (possible options are allow, deny and keep) | 'deny' |

| maximumValue | The maximum value that can be entered | '9999999999999.99' |

| minimumValue | The minimum value that can be entered  | '-9999999999999.99' |

| modifyValueOnWheel | Determine if the element value can be incremented / decremented with the mouse wheel. The wheel behavior is modified with the wheelStep option. | true |

| `negativeBracketsTypeOnBlur` | Adds brackets `[]`, parenthesis `()`, curly braces `{}`, chevrons `<>`, angle brackets `〈〉`, Japanese quotation marks `｢｣`, half brackets `⸤⸥`, white square brackets `⟦⟧`, quotation marks `‹›` or guillemets `«»` on negative values when unfocused. The value must be formatted like `','`. | `null` |

| negativePositiveSignPlacement | Placement of negative/positive sign relative to the currency symbol (possible options are l (left), r (right), p (prefix) and s (suffix)) | null |

| negativeSignCharacter | Defines the negative sign character to use | '-' |

| `noEventListeners` | Defines if the element should have event listeners activated on it.
*Note: Setting this to `true` will prevent any format to be applied once the user starts modifying the element value. This is unlikely what you want.* | `false` |

| onInvalidPaste | Manage how autoNumeric react when the user tries to paste an invalid number (possible options are error, ignore, clamp, truncate or replace) | 'error' |

| outputFormat | Defines the localized output format of the getLocalized, `form, formArray and formJson* methods | null` |

| overrideMinMaxLimits | Override minimum and maximum limits (possible options are ceiling, floor and ignore) | null |

| positiveSignCharacter | Defines the positive sign character to use (Note: It's only shown if showPositiveSign is set to true) | '+' |

| rawValueDivisor | Define the number that will divide the formatted value into the raw value (ie. when displaying '1.23%', the raw value kept is 0.0123 if rawValueDivisor is set to 100) | null |

| `readOnly` | Defines if the `` element should be set as read only on initialization | `false` || `roundingMethod` | Method used for rounding. The possible options are:
`S` (Round-Half-Up Symmetric (default)),
`A` (Round-Half-Up Asymmetric),
`s` (Round-Half-Down Symmetric (lower case s)),
`a` (Round-Half-Down Asymmetric (lower case a)),
`B` (Round-Half-Even 'Bankers Rounding'),
`U` (Round Up 'Round-Away-From-Zero'),
`D` (Round Down 'Round-Toward-Zero' - same as truncate),
`C` (Round to Ceiling 'Toward Positive Infinity'),
`F` (Round to Floor 'Toward Negative Infinity'),
`N05` (Rounds to the nearest .05 (same as `'CHF'` used in v1.9.* and still valid)),
`U05` (Rounds up to next .05),
`D05` (Rounds down to next .05) | `'S'` |

| saveValueToSessionStorage | Allow the decimalPlacesShownOnFocus value to be saved into session storage | false |

| selectNumberOnly | Determine if the 'Select All' keyboard command will select the complete input text content (including the currency symbol and suffix text), or only the input numeric value | false |

| selectOnFocus | Defines if the element value should be selected on focus. That selection is dependant on the selectNumberOnly option value. | true |

| serializeSpaces | Defines how the serialize functions should treat spaces when serializing (convert them to '%20' or '+') | '+' |

| showOnlyNumbersOnFocus | Remove the thousand separator, currency symbol and suffix on focus | false |

| showPositiveSign | Allow the positive sign symbol + to be displayed for positive numbers | false |

| showWarnings | Defines if warnings should be shown. This is safe to disable in production. | true |

| `styleRules` | Defines the rules that calculate the CSS class(es) to apply on the element, based on the raw unformatted value.
**This can also be used to call callbacks whenever the `rawValue` is updated**. | `null` |

| suffixText | Additional text suffix that is added after the number | '' |

| symbolWhenUnfocused | Symbol placed as a suffix when unfocused. This is used in combination with the divisorWhenUnfocused option. | null |

| unformatOnHover | Defines if the element value should be unformatted when the user hover his mouse over it while holding the Alt key | true |

| unformatOnSubmit | Removes formatting on submit event | false |

| `valuesToStrings` | Provide a way for automatically and transparently replacing the formatted value with a pre-defined string, when the raw value is equal to a specific value.
For instance when using `{ 0: '-' }`, the hyphen `'-'` is displayed when the `rawValue` is equal to `0`. Multiple 'replacements' can be defined. | `null` |

| watchExternalChanges | Defines if the AutoNumeric element should watch (and format) external changes made without using .set(). This is set to false by default to prevent infinite loops when used with third party frameworks that relies on the 'autoNumeric:rawValueModified' events being sent. | false |

| wheelOn | Used in conjonction with the modifyValueOnWheel option, defines when the wheel event will increment or decrement the element value, either when the element is focused, or hovered | 'focus' |

| wheelStep | Used in conjonction with the modifyValueOnWheel option, this allow to either define a fixed step (ie. 1000), or a progressive one that is calculated based on the size of the current value | 'progressive' |

Predefined options

Sometimes you do not want to have to configure every single aspect of your format, specially if it's a common one.
Hence, we provide multiple default options for the most common currencies and number formats.

Predefined language options

autoNumeric provides predefined language options to format currencies.

You can set the pre-defined language option like so:

0. ``` js
1. // Use the methods
2. new AutoNumeric('.mySelector > input').french();
3. // ...or just create the AutoNumeric object with the language option
4. new AutoNumeric('.mySelector > input', AutoNumeric.getPredefinedOptions().French);
5. ```

Currently, the predefined language options are:

| | Option name |

| :---------------- | :---------------- |

| :fr: | French |

| :es: | Spanish |

| :us: | NorthAmerican |

| :uk: | British |

| 🇨🇭 | `Swiss` |

| :jp: | Japanese |

| :cn: | Chinese |

| 🇧🇷 | `Brazilian` |

If you feel a common currency option is missing, please create a pull request and we'll add it!

Predefined common options

Moreover, autoNumeric provides the following common options:

| Option name | Description | Examples |

| :---------------- | :---------------- | ----------------: |

| dotDecimalCharCommaSeparator | Set the decimal character as a dot . and the group separator as a comma , | 1,234.56 |

| commaDecimalCharDotSeparator | Set the decimal character as a comma , and the group separator as a dot . | 1.234,56 |

| integer | Set the minimum and maximum value so that only an integer can be entered, without any decimal places available | 42, -42 |

| integerPos | Set the minimum and maximum value so that only a positive integer can be entered | 42 |

| integerNeg | Set the minimum and maximum value so that only a negative integer can be entered | -42 |

| float | Set the minimum and maximum value so that a float can be entered, without the default 2 decimal places | 1.234, -1.234 |

| floatPos | Set the minimum and maximum value so that only a positive float can be entered | 1.234 |

| floatNeg | Set the minimum and maximum value so that only a negative float can be entered | -1.234 |

| numeric | Format the value as a numeric string (with no digit group separator, and a dot for the decimal point) | 1234.56 |

| numericPos | Idem above, but only allow positive values | 1234.56 |

| numericNeg | Idem above, but only allow negative values | -1234.56 |

| euro | Same configuration than French | 1.234,56 € |

| euroPos | Idem above, but only allow positive values | 1.234,56 € |

| euroNeg | Idem above, but only allow negative values | -1.234,56 € |

| euroSpace | Same configuration than French except a space is used for the group separator instead of the dot | 1 234,56 € |

| euroSpacePos | Idem above, but only allow positive values | 1 234,56 € |

| euroSpaceNeg | Idem above, but only allow negative values | -1 234,56 € |

| dollar | Same configuration than NorthAmerican  | $1,234.56 |

| dollarPos | Idem above, but only allow positive values | $1,234.56 |

| dollarNeg | Idem above, but only allow negative values | -$1,234.56 |

| percentageEU2dec | Same configuration than French, but display a percent % sign instead of the currency sign, with 2 decimal places | 12,34 % |

| percentageEU2decPos | Idem above, but only allow positive values | 12,34 % |

| percentageEU2decNeg | Idem above, but only allow negative values | -12,34 % |

| percentageEU3dec | Same configuration than French, but display a percent % sign instead of the currency sign, with 3 decimal places | 12,345 % |

| percentageEU3decPos | Idem above, but only allow positive values | 12,345 % |

| percentageEU3decNeg | Idem above, but only allow negative values | -12,345 % |

| percentageUS2dec | Same configuration than NorthAmerican, but display a percent % sign instead of the currency sign, with 2 decimal places | 12.34% |

| percentageUS2decPos | Idem above, but only allow positive values | 12.34% |

| percentageUS2decNeg | Idem above, but only allow negative values | -12.34% |

| percentageUS3dec | Same configuration than NorthAmerican, but display a percent % sign instead of the currency sign, with 3 decimal places | 12.345% |

| percentageUS3decPos | Idem above, but only allow positive values | 12.345% |

| percentageUS3decNeg | Idem above, but only allow negative values | -12.345% |

You can set those pre-defined options like so:

0. ``` js
1. new AutoNumeric('.mySelector > input', AutoNumeric.getPredefinedOptions().integerPos);
2. ```

Predefined style rules

With the `styleRules` option, you can define the rules that add or remove the CSS class(es) from the element, based on the raw unformatted value.
This option can also be used to define custom callbacks in the `userDefined` attribute, that will be called whenever the `rawValue` is updated.

Predefined styles are available so you do not have to create them:

Positive and negative

Sets the `'autoNumeric-positive'` css class whenever the raw value is positive.

Sets the 'autoNumeric-negative' css class whenever the raw value is negative.

0. ``` js
1. new AutoNumeric(domElement, { styleRules: AutoNumeric.options.styleRules.positiveNegative });
2. ```

Range from 0 to 100, in 4 steps

Sets the `'autoNumeric-red'` css class whenever the raw value is between `0` and `25` excluded.
Sets the `'autoNumeric-orange'` css class whenever the raw value is between `25` and `50` excluded.
Sets the `'autoNumeric-yellow'` css class whenever the raw value is between `50` and `75` excluded.

Sets the 'autoNumeric-green' css class whenever the raw value is between 75 and 100 excluded.

0. ``` js
1. new AutoNumeric(domElement, { styleRules: AutoNumeric.options.styleRules.range0To100With4Steps });
2. ```

Odd and even

Sets the `'autoNumeric-even'` css class whenever the raw value is even.

Sets the 'autoNumeric-odd' css class whenever the raw value is odd.

0. ``` js
1. new AutoNumeric(domElement, { styleRules: AutoNumeric.options.styleRules.evenOdd });
2. ```

Small range around zero, from -1 to 1

Sets the `'autoNumeric-small-negative'` css class whenever the raw value is between `-1` and `0` excluded.
Sets the `'autoNumeric-zero'` css class whenever the raw value is equal to `0`.

Sets the 'autoNumeric-small-positive' css class whenever the raw value is between 0 excluded and 1.

0. ``` js
1. new AutoNumeric(domElement, { styleRules: AutoNumeric.options.styleRules.rangeSmallAndZero });
2. ```

Custom callbacks

Custom callbacks can be defined and will be called every time the *raw value* is updated.
You can add as many callbacks you want in the `userDefined` attribute of the `styleRules` object in the options.
Each `userDefined` array entry should at least provide a function as the `callback` attribute.

This callback function is passed the rawValue as the single parameter (except if classes is null or undefined, see below).

Depending of what type of data the callback function returns, and what the content of the classes attribute is, it will either uses CSS class names defined in the classes attribute, or just call the callback with the current AutoNumeric object passed as a parameter if classes is null or undefined.

| # | Callback return type | classes content | Result |

| :----------------: | :----------------: | :-----------: | :-----------:  |

| 1 | a boolean | a single String | If true, add the single class defined in classes. If false removes it. |

| 2 | a boolean | an Array with 2 values (array indexes) | If true, add the first element of the array, otherwise the second |

| 3 | an integer | an Array with multiple values (array indexes) | Will add the selected CSS class classes[index], and remove the others |

| 4 | an Array of integer | an Array with multiple values (array indexes) | Will add all the given selected CSS classes, and remove the others |

| 5 | ∅ | null or undefined | There, the callback have access to the current AutoNumeric object passed as its argument, which means you are free to do whatever you want from here! |

See the following examples:

0. ``` js
1. const options = {
2.     styleRules : {
3.         userDefined: [
4.             // 1) If 'classes' is a string, set it if `true`, remove it if `false`
5.             { callback: rawValue => { return true; }, classes: 'thisIsTrue' },
6.             // 2) If 'classes' is an array with only 2 elements, set the first class if `true`, the second if `false`
7.             { callback: rawValue => rawValue % 2 === 0, classes: ['autoNumeric-even', 'autoNumeric-odd'] },
8.             // 3) Return only one index to use on the `classes` array (here, 'class3')
9.             { callback: rawValue => { return 2; }, classes: ['class1', 'class2', 'class3'] },
10.             // 4) Return an array of indexes to use on the `classes` array (here, 'class1' and 'class3')
11.             { callback: rawValue => { return [0, 2]; }, classes: ['class1', 'class2', 'class3'] },
12.             // 5) If 'classes' is `undefined` or `null`, then the callback is called with the AutoNumeric object passed as a parameter
13.             { callback: anElement => { return anElement.getFormatted(); } },
14.         ],
15.     },
16. }
17. ```

Special options

noEventListeners

Using the noEventListeners option allow autoNumeric to only format without adding any event listeners to an input, or any other DOM elements (that the function would accept as a parameter). This would be useful for read-only values for instance.

0. ``` js
1. // Initialize without setting up any event listeners
2. anElement = new AutoNumeric(domElement, 12345.789, { options }).remove(); // This is the default existing way of doing that...
3. // ...but you can also directly pass a special option `noEventListeners` to prevent the initial creation of those event listeners
4. anElement = new AutoNumeric(domElement, 12345.789, { noEventListeners: true });
5. ```

In the latter case, it initialize the AutoNumeric element, except it does not add any event listeners. Which means it format the value only once and then let the user modify it freely.
*Note: The value can then be formatted via a call to `set`.*

readOnly

AutoNumeric can initialize an `` element with the `readonly` property by setting the `readOnly` option to `true` in the settings:

0. ``` js
1. anElement = new AutoNumeric(domElement, 12345.789, { readOnly: true });
2. ```

For more detail on how to use each options, please take a look at the detailed comments in the source code for the defaultSettings object.

Options update

Options can be added and/or modified after the initialization has been done.

Either by passing an option object that contains multiple options,

0. ``` js
1. anElement.update({ moreOptions });
2. anElement.update(AutoNumeric.getPredefinedOptions().NorthAmerican); // Update the settings (and immediately reformat the element accordingly)
3. ```

by passing multiple option objects, the latter overwriting the settings from the former ones...

0. ``` js
1. anElement.update({ moreOptions1 }, { moreOptions2 }, { moreOptions3 });
2. ```

...or by changing the options one by one (or by calling a pre-defined option object).

0. ``` js
1. anElement.options.minimumValue('12343567.89');
2. anElement.options.allowDecimalPadding(false);
3. ```

At any point, you can reset the options by calling the options.reset() method.

This effectively drop any previous options you could have set, then load back the default settings.

0. ``` js
1. anElement.options.reset();
2. ```

Lastly, the option object can be accessed directly, thus allowing to query each options globally too

0. ``` js
1. anElement.getSettings(); // Return the options object containing all the current autoNumeric settings in effect
2. ```

Methods

autoNumeric provides numerous methods to access and modify the element value, formatted or unformatted, at any point in time.

It does so by providing access to those [methods](#instantiated-methods) via the AutoNumeric object class (declared as an ES6 Module).

First. you need to get a reference to the AutoNumeric module that you need to import:

0. ``` js
1. import AutoNumeric from 'autoNumeric.min';
2. ```

Then you'll be able to access either the methods on the instantiated AutoNumeric object, or the static functions directly by using theAutoNumeric class.

Instantiated methods

Set, get, format, unformat and other usual AutoNumeric functions

The following functions are available on all autoNumeric-managed elements:

| Method           | Description | Call example |

| :----------------: | :-----------:  | :-----------:  |

| set | Set the value (that will be formatted immediately) | anElement.set(42.76); |

| set | Set the value and update the setting in one go | anElement.set(42.76, { options }); |

| set | Set the value, but do not save the new state in the history table (used for undo/redo actions) | anElement.set(42.76, { options }, false); |

| setUnformatted | Set the value (that will not be formatted immediately) | anElement.setUnformatted(42.76); |

| setUnformatted | Set the value and update the setting in one go (the value will not be formatted immediately) | anElement.setUnformatted(42.76, { options }); |

| getNumericString | Return the unformatted number as a string | anElement.getNumericString(); |

| get | Alias for the .getNumericString() method (this is deprecated and will be removed soon™) | anElement.get(); |

| getFormatted | Return the formatted string | anElement.getFormatted(); |

| getNumber | Return the unformatted number as a number (Warning: If you are manipulating a number bigger than [Number.MAX_SAFE_INTEGER](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER), you will encounter problems if you try to retrieve it as a number and not a string) | anElement.getNumber(); |

| getLocalized | Return the localized unformatted number as a string | anElement.getLocalized(); |

| getLocalized | Return the localized unformatted number as a string, using the outputFormat option override passed as a parameter | anElement.getLocalized(forcedOutputFormat); |

| getLocalized | Idem above, but with a callback function and a forced outputFormat | anElement.getLocalized(forcedOutputFormat, callback); |

| getLocalized | Idem above, but with a callback function | anElement.getLocalized(callback); |

| `get | Pass the result of the get function to the given callback, see here |anElement.get*(funcCallback);` |

| reformat | Force the element to reformat its value again (in case the formatting has been lost) | anElement.reformat(); |

| unformat | Remove the formatting and keep only the raw unformatted value in the element (as a numeric string) | anElement.unformat(); |

| unformatLocalized | Remove the formatting and keep only the localized unformatted value in the element | anElement.unformatLocalized(); |

| unformatLocalized | Idem above, but using the outputFormat option override passed as a parameter | anElement.unformatLocalized(forcedOutputFormat); |

| isPristine | Return true if the current value is the same as when the element first got initialized (not set()) | anElement.isPristine(); |

| select | Select the formatted element content, based on the selectNumberOnly option | anElement.select(); |

| selectNumber | Select only the numbers in the formatted element content, leaving out the currency symbol, whatever the value of the selectNumberOnly option | anElement.selectNumber(); |

| selectInteger | Select only the integer part in the formatted element content, whatever the value of selectNumberOnly | anElement.selectInteger(); |

| selectDecimal | Select only the decimal part in the formatted element content, whatever the value of selectNumberOnly | anElement.selectDecimal(); |

| clear | Reset the element value to the empty string '' (or the currency sign, depending on the emptyInputBehavior option value) | anElement.clear(); |

| clear | Always reset the element value to the empty string '' as above, no matter the emptyInputBehavior option value | anElement.clear(true); |

Note: Most of them can be chained together, if needed.

Using callback functions with get* methods

All get* methods can accept a callback function as its argument (those methods being get, getNumericString, getFormatted, getNumber and getLocalized).

That callback is passed two parameters, the result of the get* method as its first argument, and the AutoNumeric object as its second.

This allows you to directly use the result of the get* functions without having to declare a temporary variable like so:

0. ``` js
1. function sendToServer(value) {
2.     ajax(value);
3. }
4. 
   
5. console.log(`The value ${anElement.getNumber(sendToServer)} has been sent to the server.`);
6. ```

In other words,

0. ``` js
1. // Using:
2. anElement.getNumericString(funcCallback);
3. 
   
4. // Is equivalent to doing:
5. const result = anElement.getNumericString();
6. funcCallback(result, anElement);
7. ```

Note: The callback function behavior is slightly different when called on multiple elements via `global.get` methods.*

Un-initialize the AutoNumeric element

| Method           | Description | Call example |

| :----------------: | :-----------:  | :-----------:  |

| remove | Remove the autoNumeric listeners from the element (previous name : 'destroy'). Keep the element content intact. | anElement.remove(); |

| wipe | Remove the autoNumeric listeners from the element, and reset its value to '' | anElement.wipe(); |

| nuke | Remove the autoNumeric listeners from the element, then delete the DOM element altogether | anElement.nuke(); |

Node manipulation

| Method           | Description | Call example |

| :----------------: | :-----------:  | :-----------:  |

| node | Return the DOM element reference of the autoNumeric-managed element | anElement.node(); |

| parent | Return the DOM element reference of the parent node of the autoNumeric-managed element | anElement.parent(); |

| detach | Detach the current AutoNumeric element from the shared local 'init' list (which means any changes made on that local shared list will not be transmitted to that element anymore) | anElement.detach(); |

| detach | Idem above, but detach the given AutoNumeric element, not the current one | anElement.detach(otherAnElement); |

| attach | Attach the given AutoNumeric element to the shared local 'init' list. When doing that, by default the DOM content is left untouched. The user can force a reformat with the new shared list options by passing a second argument valued true. | anElement.attach(otherAnElement, reFormat = true); |

Format and unformat other numbers or DOM elements with an existing AutoNumeric element

You can use any AutoNumeric element to format or unformat other numbers or DOM elements.

This allows to format or unformat numbers, strings or directly other DOM elements without having to specify the options each time, since the current AutoNumeric object already has those settings set.

| Method           | Description | Call example |

| :----------------: | :-----------:  | :-----------:  |

| formatOther | This use the same function signature that when using the static AutoNumeric method directly (cf. below: AutoNumeric.format), but without having to pass the options | anElement.formatOther(12345, { options }); |

| formatOther | Idem above, but apply the formatting to the given DOM element by modifying its content directly | anElement.formatOther(domElement, { options }); |

| unformatOther | This use the same function signature that when using the static AutoNumeric method directly (cf. below: AutoNumeric.unformat), but without having to pass the options | anElement.unformatOther('1.234,56 €', { options }); |

| unformatOther | Idem above, but apply the unformatting to the given DOM element by modifying its content directly | anElement.unformatOther(domElement, { options }); |

Initialize other DOM Elements

Once you have an AutoNumeric element already setup correctly with the right options, you can use it as many times you want to initialize as many other DOM elements as needed (this works only on elements that can be managed by autoNumeric).

Whenever `init` is used to initialize other DOM elements, a shared local *'init' list* of those elements is stored in the AutoNumeric objects.
This allows for neat things like modifying all those *linked* AutoNumeric elements globally, with only one call.

| Method           | Description | Call example |

| :----------------: | :-----------:  | :-----------:  |

| init | Use an existing AutoNumeric element to initialize another single DOM element with the same options | const anElement2 = anElement.init(domElement2); |

| init | If true is set as the second argument, then the newly generated AutoNumeric element will not share the same local element list as anElement | const anElement2 = anElement.init(domElement2, true); |

| init | Use an existing AutoNumeric element to initialize multiple other DOM elements from an Array, with the same options | const anElementsArray = anElement.init([domElement2, domElement3, domElement4]); |

| init | Use an existing AutoNumeric element to initialize multiple other DOM elements from a CSS selector, with the same options | const anElementsArray = anElement.init('.currency'); |

Perform actions globally on a shared 'init' list of AutoNumeric elements

This local *'init' list* can be used to perform global operations on all those AutoNumeric elements, with **one function call**.
To do so, you must call the wanted function by prefixing `.global` before the method name (ie. `anElement.global.set(42)`).

Below are listed all the supported methods than can be called globally:

0. ``` js
1. anElement.global.set(2000); // Set the value 2000 in all the autoNumeric-managed elements that are shared on this element
2. anElement.global.setUnformatted(69);
3. [result1, result2, result3] = anElement.global.get(); // Return an array of results
4. [result1, result2, result3] = anElement.global.getNumericString(); // Return an array of results
5. [result1, result2, result3] = anElement.global.getFormatted(); // Return an array of results
6. [result1, result2, result3] = anElement.global.getNumber(); // Return an array of results
7. [result1, result2, result3] = anElement.global.getLocalized(); // Return an array of results
8. anElement.global.reformat();
9. anElement.global.unformat();
10. anElement.global.unformatLocalized();
11. anElement.global.unformatLocalized(forcedOutputFormat);
12. anElement.global.update({ options }); // Update the settings of each autoNumeric-managed elements
13. anElement.global.update({ options1 }, { options2 }, { options3 }); // Idem above, but accepts as many option objects as needed
14. anElement.global.isPristine(); // Return `true` is *all* the autoNumeric-managed elements are pristine, if their raw value hasn't changed
15. anElement.global.isPristine(false); // Idem as above, but also checks that the formatted value hasn't changed
16. anElement.global.clear(); // Clear the value in all the autoNumeric-managed elements that are shared on this element
17. anElement.global.remove();
18. anElement.global.wipe();
19. anElement.global.nuke();
20. ```

The shared local list also provide list-specific methods to manipulate it:

0. ``` js
1. anElement.global.has(domElementOrAutoNumericObject); // Return `true` if the given AutoNumeric object (or DOM element) is in the local AutoNumeric element list
2. anElement.global.addObject(domElementOrAutoNumericObject); // Add an existing AutoNumeric object (or DOM element) to the local AutoNumeric element list, using the DOM element as the key
3. anElement.global.removeObject(domElementOrAutoNumericObject); // Remove the given AutoNumeric object (or DOM element) from the local AutoNumeric element list, using the DOM element as the key
4. anElement.global.removeObject(domElementOrAutoNumericObject, true); // Idem above, but keep the current AutoNumeric object in the local list if it's removed by itself
5. anElement.global.empty(); // Remove all elements from the shared list, effectively emptying it
6. anElement.global.empty(true); // Idem above, but instead of completely emptying the local list of each AutoNumeric objects, each one of those keeps itself in its own local list
7. [anElement0, anElement1, anElement2, anElement3] = anElement.global.elements(); // Return an array containing all the AutoNumeric elements that have been initialized by each other
8. anElement.global.getList(); // Return the `Map` object directly
9. anElement.global.size(); // Return the number of elements in the local AutoNumeric element list
10. ```

Using callback functions with global.get* methods

Like for their `get methods counterparts,global.get` methods accepts a callback function.

However, the callback is executed only once and is passed an array of the get* function results as its first argument, while the AutoNumeric object being passed as its second one.

0. ``` js
1. // Using:
2. anElement.global.getNumericString(funcCallback);
3. 
   
4. // Is equivalent to doing:
5. const [result1, result2, result3] = anElement.global.getNumericString();
6. funcCallback([result1, result2, result3], anElement);
7. ```

Form functions

autoNumeric elements provide special functions to manipulate the form they are a part of.

Those special functions really work on the parent `` element, instead of the `` element itself.

| Method           | Description | Call example |

| :----------------: | :-----------:  | :-----------:  |

| `form` | Return a reference to the parent `` element, `null` if it does not exist | `anElement.form();` || `form(forcedSearch)` | Idem above, but will force a new search for the parent `` element, discarding any previously found one | `anElement.form(true);` |

| formNumericString | Return a string in standard URL-encoded notation with the form input values being unformatted | anElement.formNumericString(); |

| formFormatted | Return a string in standard URL-encoded notation with the form input values being formatted | anElement.formFormatted(); |

| formLocalized | Return a string in standard URL-encoded notation with the form input values, with localized values | anElement.formLocalized(); |

| formLocalized(forcedOutputFormat) | Idem above, but with the possibility of overriding the outputFormat option | anElement.formLocalized(forcedOutputFormat); |

| `formArrayNumericString` | Return an array containing an object for each form `` element, with the values as numeric strings | `anElement.formArrayNumericString();` || `formArrayFormatted` | Return an array containing an object for each form `` element, with the values as formatted strings | `anElement.formArrayFormatted();` || `formArrayLocalized` | Return an array containing an object for each form `` element, with the values as localized numeric strings | `anElement.formArrayLocalized();` |

| formArrayLocalized(forcedOutputFormat) | Idem above, but with the possibility of overriding the outputFormat option | anElement.formArrayLocalized(forcedOutputFormat); |

| formJsonNumericString | Return a JSON string containing an object representing the form input values. This is based on the result of the formArrayNumericString() function. | anElement.formJsonNumericString(); |

| formJsonFormatted | Return a JSON string containing an object representing the form input values. This is based on the result of the formArrayFormatted() function. | anElement.formJsonFormatted(); |

| formJsonLocalized | Return a JSON string containing an object representing the form input values. This is based on the result of the formArrayLocalized() function. | anElement.formJsonLocalized(); |

| formJsonLocalized(forcedOutputFormat) | Idem above, but with the possibility of overriding the outputFormat option | anElement.formJsonLocalized(forcedOutputFormat); |

| `formUnformat` | Unformat all the autoNumeric-managed elements that are a child to the parent element of this `anElement` input, to numeric strings | `anElement.formUnformat();` || `formUnformatLocalized` | Unformat all the autoNumeric-managed elements that are a child to the parent element of this `anElement` input, to localized strings | `anElement.formUnformatLocalized();` || `formReformat` | Reformat all the autoNumeric-managed elements that are a child to the parent element of this `anElement` input | `anElement.formReformat();` |

The following functions can either take a callback, or not. If they don't, the default form.submit() function will be called.

| Method           | Description | Call example |

| :----------------: | :-----------:  | :-----------:  |

| formSubmitNumericString(callback) | Run the callback(value) with value being equal to the result of formNumericString() | anElement.formSubmitNumericString(callback); |

| formSubmitFormatted(callback) | Run the callback(value) with value being equal to the result of formFormatted() | anElement.formSubmitFormatted(callback); |

| formSubmitLocalized(callback) | Run the callback(value) with value being equal to the result of formLocalized() | anElement.formSubmitLocalized(callback); |

| formSubmitLocalized(forcedOutputFormat, callback) | Idem above, but with the possibility of overriding the outputFormat option | anElement.formSubmitLocalized(forcedOutputFormat, callback); |

For the following methods, the callback is mandatory:

| Method           | Description | Call example |

| :----------------: | :-----------:  | :-----------:  |

| formSubmitArrayNumericString(callback) | Run the callback(value) with value being equal to the result of formArrayNumericString() | anElement.formSubmitArrayNumericString(callback); |

| formSubmitArrayFormatted(callback) | Run the callback(value) with value being equal to the result of formArrayFormatted() | anElement.formSubmitArrayFormatted(callback); |

| formSubmitArrayLocalized(callback, forcedOutputFormat) | Idem above, but with the possibility of overriding the outputFormat option | anElement.formSubmitArrayLocalized(callback, forcedOutputFormat); |

| formSubmitJsonNumericString(callback) | Run the callback(value) with value being equal to the result of formJsonNumericString() | anElement.formSubmitJsonNumericString(callback); |

| formSubmitJsonFormatted(callback) | Run the callback(value) with value being equal to the result of formJsonFormatted() | anElement.formSubmitJsonFormatted(callback); |

| formSubmitJsonLocalized(callback, forcedOutputFormat) | Idem above, but with the possibility of overriding the outputFormat option | anElement.formSubmitJsonLocalized(callback, forcedOutputFormat); |

Function chaining

Most of those instantiated functions can be chained which allow to be less verbose and more concise.

0. ``` js
1. // On one element
2. anElement.french()
3.          .set(42)
4.          .update({ options })
5.          .formSubmitJsonNumericString(callback)
6.          .clear();
7. 
   
8. // On multiple elements
9. anElement.global.set(72)
10.          .global.clear()
11.          .set(25)
12.          .global.getNumericString();
13. ```

Static methods

Without having to initialize any AutoNumeric object, you can directly use the static AutoNumeric class functions.

*Note: Some of those functions can be used in [Web Workers](#in-web-workers).*

| Method           | Description | Call example |

| :---------------- | :-----------:  | :-----------:  |

| areSettingsValid | Return true in the settings are valid | AutoNumeric.areSettingsValid({ options }) |

| format | Format the given number with the given options. This returns the formatted value as a string. | AutoNumeric.format(12345.21, { options }); |

| format | Idem above, but using a numeric string as the first parameter | AutoNumeric.format('12345.21', { options }); |

| format | Idem above, bu