bd7ac9df03
This check is in place in most other places, mostly because we have run into widespread issues under similar circumstances and we like to avoid those, but it was forgotten here. There also were no tests covering this, so it was never caught. This adds tests that ensure that the option in the results list will be generated with the correct "disabled" state based on whether or not it, or a parent element, is marked as disabled. This should have been easy: just check `element.disabled` Unfortunately the `disabled` property is not inherited within the option chain, so if an `<optgroup>` is disabled, the `<option>` elements or other `<optgroup>` elements held within it do not have their `disabled` property set to `true`. As a result, we needed to use the `matches` method to check if the `:disabled` state is present for the element. The `matches` method is part of the official standard, but it was not implemented under that name for a while and as a result Internet Explorer only supports it under the prefixed `msMatchesSelector` method and older versions of Webkit have it implemented as `webkitMatchesSelector`. But once we use this method, it appears to consistently return the expected results. This `matches` method and prefixed predecessors are not supported in IE 8, but they are supported in IE 9 and any browsers newer than that. Instead of buulding a very hacky solution using `querySelectorAll` that was brittle, I have chosen to act like everyone else and pretend IE 8 no longer exists. Fixes #3347 Closes #4818 |
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Select2
Select2 is a jQuery-based replacement for select boxes. It supports searching, remote data sets, and pagination of results.
To get started, checkout examples and documentation at https://select2.org/
Use cases
- Enhancing native selects with search.
- Enhancing native selects with a better multi-select interface.
- Loading data from JavaScript: easily load items via AJAX and have them searchable.
- Nesting optgroups: native selects only support one level of nesting. Select2 does not have this restriction.
- Tagging: ability to add new items on the fly.
- Working with large, remote datasets: ability to partially load a dataset based on the search term.
- Paging of large datasets: easy support for loading more pages when the results are scrolled to the end.
- Templating: support for custom rendering of results and selections.
Browser compatibility
- IE 8+
- Chrome 8+
- Firefox 10+
- Safari 3+
- Opera 10.6+
Usage
You can source Select2 directly from a CDN like JSDliver or CDNJS, download it from this GitHub repo, or use one of the integrations below.
Integrations
Third party developers have created plugins for platforms which allow Select2 to be integrated more natively and quickly. For many platforms, additional plugins are not required because Select2 acts as a standard <select> box.
Plugins
- Django
- Drupal - drupal-select2
- Meteor - meteor-select2
- Ruby on Rails - select2-rails
- Wicket - wicketstuff-select2
- Yii 2 - yii2-widget-select2
- Angularjs - mdr-angular-select2
Themes
- Bootstrap 3 - select2-bootstrap-theme
- Bootstrap 4 - select2-bootstrap4-theme
- Flat UI - select2-flat-theme
- Metro UI - select2-metro
Missing an integration? Modify this README and make a pull request back here to Select2 on GitHub.
Internationalization (i18n)
Select2 supports multiple languages by simply including the right language JS
file (dist/js/i18n/it.js, dist/js/i18n/nl.js, etc.) after
dist/js/select2.js.
Missing a language? Just copy src/js/select2/i18n/en.js, translate it, and
make a pull request back to Select2 here on GitHub.
Documentation
The documentation for Select2 is available
through GitHub Pages and is located within the separate select2/docs repository.
Community
You can find out about the different ways to get in touch with the Select2 community at the Select2 community page.
Copyright and license
The license is available within the repository in the LICENSE file.