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Feature detect HTML5 and CSS3 features, with handy css and javascript hooks so you can progressively enhance to your heart's content.

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Modernizr

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Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.

Modernizr tests which native CSS3 and HTML5 features are available in the current UA and makes the results available to you in two ways: as properties on a global Modernizr object, and as classes on the <html> element. This information allows you to progressively enhance your pages with a granular level of control over the experience.

Breaking changes with v4

  • Dropped Node 8 Support, please upgrade to Node v10

  • These tests got removed:

    • touchevents: discussion
    • unicode: discussion
    • templatestrings: duplicate of the es6 detect stringtemplate

New Asynchronous Event Listeners

Often times people want to know when an asynchronous test is done so they can allow their application to react to it. In the past, you've had to rely on watching properties or <html> classes. Only events on asynchronous tests are supported. Synchronous tests should be handled synchronously to improve speed and to maintain consistency.

The new API looks like this:

// Listen to a test, give it a callback
Modernizr.on('testname', function( result ) {
  if (result) {
    console.log('The test passed!');
  }
  else {
    console.log('The test failed!');
  }
});

We guarantee that we'll only invoke your function once (per time that you call on). We are currently not exposing a method for exposing the trigger functionality. Instead, if you'd like to have control over async tests, use the src/addTest feature, and any test that you set will automatically expose and trigger the on functionality.

Getting Started

  • Clone or download the repository
  • Install project dependencies with npm install

Building Modernizr

From javascript

Modernizr can be used programmatically via npm:

<