Checked Polyfill

This code adds support for the :checked pseudo-class on browsers that don't natively support it. On old browsers, it adds a .checked class that behaves like the :checked psuedo selector. If you use the "for" attribute on your label, it will also apply the .checked class to your label. That helps work around the buggy sibling selector support in IE7.

Usage

Start by downloading Checked Polyfill or installing it from npm.

Include the script at the bottom of the page. (If you don't already have jQuery, include that too.)

<script src="checked-polyfill.js"></script>

In a script tag or a separate .js file, call the polyfill on elements that you'd like to style.

$( document ).ready(function() {
	$('input:radio, input:checkbox').checkedPolyfill();
});

Finally, use :checked and .checked to style your radio buttons. You'll get native support in modern browsers, and JS-based support older browsers (e.g., in IE7 and IE8). Put these selectors on separate lines.

.myStyledLabels label.checked {
	background-color: #ccc; /* For older browsers */
}

.myStyledLabels input[type="radio"]:checked + label {
	background-color: #ccc; /* For modern browsers */
}

License

Checked polyfill is licensesed under the MIT License, and is free for commercial or personal use.

Copyright © 2012-2019 Three Five Two and Ryan DeBeasi.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.