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https://github.com/screeny05/jquery.pointer-events-polyfill
Tiny, maintained CSS pointer-events polyfill
https://github.com/screeny05/jquery.pointer-events-polyfill
jquery polyfill
Last synced: about 2 months ago
JSON representation
Tiny, maintained CSS pointer-events polyfill
- Host: GitHub
- URL: https://github.com/screeny05/jquery.pointer-events-polyfill
- Owner: screeny05
- License: mit
- Created: 2016-05-02T09:42:13.000Z (over 8 years ago)
- Default Branch: master
- Last Pushed: 2016-12-06T17:03:14.000Z (about 8 years ago)
- Last Synced: 2024-04-24T18:08:46.399Z (8 months ago)
- Topics: jquery, polyfill
- Language: JavaScript
- Homepage:
- Size: 23.4 KB
- Stars: 10
- Watchers: 3
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE.md
Awesome Lists containing this project
README
# jQuery CSS Pointer-Events Polyfill
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This piece of javascript is a tiny Polyfill which adds support for the css-property `pointer-events: none|all;` for browsers not supporting it.
The size of the minified script is ~1000 bytes (roughly 500 bytes gzipped).
*[`pointer-events` browser support](http://caniuse.com/#feat=pointer-events)*
## Dependencies
This Polyfill depends on jQuery `@ ~1.9`.
## Usage
Include `jquery.pointer-events-polyfill.js` in your document, and call the polyfill like this:
```javascript
$(function(){
window.pointerEventsPolyfill();
});
```
Now your page supports `pointer-events`!
If you want to remove the polyfill again, sometime later, use it like this:
```javascript
$(function(){
var polyfill = window.pointerEventsPolyfill();
// ...stuff
polyfill.destroy();
});
```
## Caveats
### The polyfill doesn't catch events
Imagine you have two elements overlapping like this:
You want the purple element to not be clickable, so you add `pointer-events:none` to it.
Now you add click-listeners to both elements. When the intersecting area gets clicked, the first event to be thrown will be that of the purple element, the second one will be the green-ish one.
**The purple element's event will be thrown!**
### Synchronous callbacks might hide events temporarily
The Polyfill hides the elements synchronous to check whether the underlying elements have been clicked,
so you're better of not blocking the event-loop, when listening on the subscribed events in order to not have invisible elements.
Example:
```html
window.pointerEventsPolyfill();
$('.clickable').click(function(){
// bad - alert blocks the event-loop, so .non-clickable
// will be invisible while the alert is open
alert('clicked');
// better
setTimeout(function(){
alert('clicked');
});
});
```
## Available Options
You can call `window.pointerEventsPolyfill` with a couple of possibly useful options, namely:
* `selector` (jQuery-selector, default: `'*'`) - indicates which elements the polyfill should apply to.
* `listenOn` (Array, default: `['click', 'dblclick', 'mousedown', 'mouseup']`) - the events this plugin listens to. Excludes mouseover-events for performance, but you can add them yourself.
* `forcePolyfill` (Bool, default: `false`) - disregard the browsers support of `pointer-events` and force the polyfill to be added.
* `pointerEventsNoneClass` (String|null, default: `null`) - when truthy, add the polyfill to elements with this class, even when the elements css doesn't have the `pointer-events`-property set.
* `pointerEventsAllClass` (String|null, default: `null`) - when truthy, this element acts as `pointer-events: all;`-element. (The opposite of `pointerEventsNoneClass`).
* `eventNamespace` (String|null, default: `pointer-events-polyfill`) - the namespace this plugin should use to identify events.
## Changelog
* 0.2.4 - correct namespaces for subscriptions
* 0.2.3 - better test, remove explicit support for `pointer-events:auto`
* 0.2.2 - add namespace to the subscribed events, add first basic tests
* 0.2.1 - documentation
* 0.2.0 - change css-detection to use recursive traversion, detecting `pointer-events: none|all` on parent-elements
* 0.1.0 - initial version
## License
[MIT](LICENSE.md)
## Credits
Credits, where credits are due. This Polyfill is loosely based on @kmeworth's [pointer_events_polyfill](https://github.com/kmewhort/pointer_events_polyfill).
The reason for this package's existance is that the `pointer_events_polyfill` is seemingly unmaintained and no longer adheres to common jQuery-Plugin best practices. Also, this package is available on Bower & NPM.
**List of Contributors:**
* @kmeworth
* @mhmxs
* @raldred
* [Modernizr](https://github.com/Modernizr/Modernizr)
* and probably some more awesome people