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author | Mario <mario@mariovavti.com> | 2021-11-09 09:10:19 +0000 |
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committer | Mario <mario@mariovavti.com> | 2021-11-09 09:10:19 +0000 |
commit | fe7ecede700fe04631d23f36473e697ce2b364dc (patch) | |
tree | e713fc39dba500a25cb2acf8561e286fb8b41ff0 /vendor/twbs/bootstrap/site/content/docs/5.1/getting-started/javascript.md | |
parent | 42de18d96d201d74e5df3ed1b8f6132cb00357b6 (diff) | |
parent | 089708ab9f90309a0c27ae633cf8f2604fce1170 (diff) | |
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Merge branch '6.4RC'6.4
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diff --git a/vendor/twbs/bootstrap/site/content/docs/5.1/getting-started/javascript.md b/vendor/twbs/bootstrap/site/content/docs/5.1/getting-started/javascript.md new file mode 100644 index 000000000..8ee428921 --- /dev/null +++ b/vendor/twbs/bootstrap/site/content/docs/5.1/getting-started/javascript.md @@ -0,0 +1,238 @@ +--- +layout: docs +title: JavaScript +description: Bring Bootstrap to life with our optional JavaScript plugins. Learn about each plugin, our data and programmatic API options, and more. +group: getting-started +toc: true +--- + +## Individual or compiled + +Plugins can be included individually (using Bootstrap's individual `js/dist/*.js`), or all at once using `bootstrap.js` or the minified `bootstrap.min.js` (don't include both). + +If you use a bundler (Webpack, Rollup...), you can use `/js/dist/*.js` files which are UMD ready. + +## Using Bootstrap as a module + +We provide a version of Bootstrap built as `ESM` (`bootstrap.esm.js` and `bootstrap.esm.min.js`) which allows you to use Bootstrap as a module in your browser, if your [targeted browsers support it](https://caniuse.com/es6-module). + +```html +<script type="module"> + import { Toast } from 'bootstrap.esm.min.js' + + Array.from(document.querySelectorAll('.toast')) + .forEach(toastNode => new Toast(toastNode)) +</script> +``` + +{{< callout warning >}} +## Incompatible plugins + +Due to browser limitations, some of our plugins, namely Dropdown, Tooltip and Popover plugins, cannot be used in a `<script>` tag with `module` type because they depend on Popper. For more information about the issue see [here](https://v8.dev/features/modules#specifiers). +{{< /callout >}} + +## Dependencies + +Some plugins and CSS components depend on other plugins. If you include plugins individually, make sure to check for these dependencies in the docs. + +Our dropdowns, popovers and tooltips also depend on [Popper](https://popper.js.org/). + +## Still want to use jQuery? It's possible! + +Bootstrap 5 is designed to be used without jQuery, but it's still possible to use our components with jQuery. **If Bootstrap detects `jQuery` in the `window` object** it'll add all of our components in jQuery's plugin system; this means you'll be able to do `$('[data-bs-toggle="tooltip"]').tooltip()` to enable tooltips. The same goes for our other components. + +## Data attributes + +Nearly all Bootstrap plugins can be enabled and configured through HTML alone with data attributes (our preferred way of using JavaScript functionality). Be sure to **only use one set of data attributes on a single element** (e.g., you cannot trigger a tooltip and modal from the same button.) + +{{< callout warning >}} +## Selectors + +Currently to query DOM elements we use the native methods `querySelector` and `querySelectorAll` for performance reasons, so you have to use [valid selectors](https://www.w3.org/TR/CSS21/syndata.html#value-def-identifier). +If you use special selectors, for example: `collapse:Example` be sure to escape them. +{{< /callout >}} + +## Events + +Bootstrap provides custom events for most plugins' unique actions. Generally, these come in an infinitive and past participle form - where the infinitive (ex. `show`) is triggered at the start of an event, and its past participle form (ex. `shown`) is triggered on the completion of an action. + +All infinitive events provide [`preventDefault()`](https://developer.mozilla.org/en-US/docs/Web/API/Event/preventDefault) functionality. This provides the ability to stop the execution of an action before it starts. Returning false from an event handler will also automatically call `preventDefault()`. + +```js +var myModal = document.getElementById('myModal') + +myModal.addEventListener('show.bs.modal', function (event) { + if (!data) { + return event.preventDefault() // stops modal from being shown + } +}) +``` + +{{< callout warning >}} +## jQuery events + +Bootstrap will detect jQuery if `jQuery` is present in the `window` object and there is no `data-bs-no-jquery` attribute set on `<body>`. If jQuery is found, Bootstrap will emit events thanks to jQuery's event system. So if you want to listen to Bootstrap's events, you'll have to use the jQuery methods (`.on`, `.one`) instead of `addEventListener`. + +```js +$('#myTab a').on('shown.bs.tab', function () { + // do something... +}) +``` +{{< /callout >}} + +## Programmatic API + +All constructors accept an optional options object or nothing (which initiates a plugin with its default behavior): + +```js +var myModalEl = document.getElementById('myModal') + +var modal = new bootstrap.Modal(myModalEl) // initialized with defaults +var modal = new bootstrap.Modal(myModalEl, { keyboard: false }) // initialized with no keyboard +``` + +If you'd like to get a particular plugin instance, each plugin exposes a `getInstance` method. In order to retrieve it directly from an element, do this: `bootstrap.Popover.getInstance(myPopoverEl)`. + +### CSS selectors in constructors + +You can also use a CSS selector as the first argument instead of a DOM element to initialize the plugin. Currently the element for the plugin is found by the `querySelector` method since our plugins support a single element only. + +```js +var modal = new bootstrap.Modal('#myModal') +var dropdown = new bootstrap.Dropdown('[data-bs-toggle="dropdown"]') +``` + +### Asynchronous functions and transitions + +All programmatic API methods are **asynchronous** and return to the caller once the transition is started but **before it ends**. + +In order to execute an action once the transition is complete, you can listen to the corresponding event. + +```js +var myCollapseEl = document.getElementById('myCollapse') + +myCollapseEl.addEventListener('shown.bs.collapse', function (event) { + // Action to execute once the collapsible area is expanded +}) +``` + +In addition a method call on a **transitioning component will be ignored**. + +```js +var myCarouselEl = document.getElementById('myCarousel') +var carousel = bootstrap.Carousel.getInstance(myCarouselEl) // Retrieve a Carousel instance + +myCarouselEl.addEventListener('slid.bs.carousel', function (event) { + carousel.to('2') // Will slide to the slide 2 as soon as the transition to slide 1 is finished +}) + +carousel.to('1') // Will start sliding to the slide 1 and returns to the caller +carousel.to('2') // !! Will be ignored, as the transition to the slide 1 is not finished !! +``` + +### Default settings + +You can change the default settings for a plugin by modifying the plugin's `Constructor.Default` object: + +```js +// changes default for the modal plugin's `keyboard` option to false +bootstrap.Modal.Default.keyboard = false +``` + +## No conflict (only if you use jQuery) + +Sometimes it is necessary to use Bootstrap plugins with other UI frameworks. In these circumstances, namespace collisions can occasionally occur. If this happens, you may call `.noConflict` on the plugin you wish to revert the value of. + +```js +var bootstrapButton = $.fn.button.noConflict() // return $.fn.button to previously assigned value +$.fn.bootstrapBtn = bootstrapButton // give $().bootstrapBtn the Bootstrap functionality +``` + +## Version numbers + +The version of each of Bootstrap's plugins can be accessed via the `VERSION` property of the plugin's constructor. For example, for the tooltip plugin: + +```js +bootstrap.Tooltip.VERSION // => "{{< param current_version >}}" +``` + +## No special fallbacks when JavaScript is disabled + +Bootstrap's plugins don't fall back particularly gracefully when JavaScript is disabled. If you care about the user experience in this case, use [`<noscript>`](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/noscript) to explain the situation (and how to re-enable JavaScript) to your users, and/or add your own custom fallbacks. + +{{< callout warning >}} +##### Third-party libraries + +**Bootstrap does not officially support third-party JavaScript libraries** like Prototype or jQuery UI. Despite `.noConflict` and namespaced events, there may be compatibility problems that you need to fix on your own. +{{< /callout >}} + +## Sanitizer + +Tooltips and Popovers use our built-in sanitizer to sanitize options which accept HTML. + +The default `allowList` value is the following: + +```js +var ARIA_ATTRIBUTE_PATTERN = /^aria-[\w-]*$/i +var DefaultAllowlist = { + // Global attributes allowed on any supplied element below. + '*': ['class', 'dir', 'id', 'lang', 'role', ARIA_ATTRIBUTE_PATTERN], + a: ['target', 'href', 'title', 'rel'], + area: [], + b: [], + br: [], + col: [], + code: [], + div: [], + em: [], + hr: [], + h1: [], + h2: [], + h3: [], + h4: [], + h5: [], + h6: [], + i: [], + img: ['src', 'srcset', 'alt', 'title', 'width', 'height'], + li: [], + ol: [], + p: [], + pre: [], + s: [], + small: [], + span: [], + sub: [], + sup: [], + strong: [], + u: [], + ul: [] +} +``` + +If you want to add new values to this default `allowList` you can do the following: + +```js +var myDefaultAllowList = bootstrap.Tooltip.Default.allowList + +// To allow table elements +myDefaultAllowList.table = [] + +// To allow td elements and data-bs-option attributes on td elements +myDefaultAllowList.td = ['data-bs-option'] + +// You can push your custom regex to validate your attributes. +// Be careful about your regular expressions being too lax +var myCustomRegex = /^data-my-app-[\w-]+/ +myDefaultAllowList['*'].push(myCustomRegex) +``` + +If you want to bypass our sanitizer because you prefer to use a dedicated library, for example [DOMPurify](https://www.npmjs.com/package/dompurify), you should do the following: + +```js +var yourTooltipEl = document.getElementById('yourTooltip') +var tooltip = new bootstrap.Tooltip(yourTooltipEl, { + sanitizeFn: function (content) { + return DOMPurify.sanitize(content) + } +}) +``` |