Important note: Webshim is not compatible with upcoming jQuery 3.x and I do not plan to work on a new major version. I will still fix critical bugs in the future though.

Webshim

The polyfilling, capability based loading JavaScript Library

General Principles

• HTML5 compliant: correctly and accurately implemented (HTML5) Markup-, JS- and DOM-APIs
  
• capability based loading: extremely lightweight in modern browsers
• cross-browser support: All A-Graded browsers including latest version of Opera are tested
• extendable: if we have not implemented a feature you want, you can easily implement it on your own

Features

• canvas
• HTML5 form features including: constraint validation and form widgets (input[type="range"], input[type="date"], input[type="number"], input[type="time"], input[type="month"], output, progress, input[list]/datalist)
• HTML5 audio/video/track implementation
• matchMedia
• interactive elements: summary/details
• XHR2 / filereader (including, XHR2/AJAX CORS and FormData handling)
• picture / img[srcset]
• promise
• geolocation
• ECMAScript 5 / JavaScript 1.8.5 features
• window.URL
• getUserMedia ('usermedia' currently only access to user's camera, not microphone)
• sticky (position: sticky)

Installation and Usage

1 - Download the Webshim Lib and put the js-webshim folder in your project.

2 - Include the JavaScript:

<script src="js/jquery.js"></script>

<script src="js-webshim/minified/polyfiller.js"></script> 

<script> 
    // load and implement all unsupported features 
    webshims.polyfill();

    // or only load a specific feature
    //webshims.polyfill('forms es5');
</script>

3 - Wait till everything has been loaded and then use it:

<script> 
    $(function(){
        // work with the HTML5 API
        $('input:invalid').each(function(){
            $(this).after( $.prop(this, 'validationMessage') );
        });
        // ...
    });
</script>

More information and demos.

Download via bower

bower install webshim --save-dev

License

The Webshims Lib core is licensed under the MIT-License.

Webshims Lib uses many great third party scripts:

Questions?

If you have any questions, please feel free to ask them on stackoverflow.com/questions/tagged/webshim.

Please tag your questions with 'webshim'.