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.
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 callbackModernizr;
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
- Clone or download the repository
- Install project dependencies with
Modernizr can be used programmatically via npm:
var modernizr = ;
build method is exposed for generating custom Modernizr builds. Example:
var modernizr = ;modernizr;
The first parameter takes a JSON object of options and feature-detects to include. See
lib/config-all.json for all available options.
The second parameter is a function invoked on task completion.
From the command-line
We also provide a command line interface for building modernizr. To see all available options run:
Or to generate everything in 'config-all.json' run this with npm:
npm start//outputs to ./dist/modernizr-build.js
To execute the tests using mocha-headless-chrome on the console run:
You can also run tests in the browser of your choice with this command:
npm run serve-gh-pages
and navigating to these two URLs:
These tests are considered deprecated. They are not included anymore in the default build and will be removed in the next major version:
Code of Conduct
This project adheres to the Open Code of Conduct. By participating, you are expected to honor this code.