matchMedia polyfill for testing media queries in JS
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Latest commit d82ca15 Jan 4, 2017 @paulirish committed on GitHub Merge pull request #76 from tanem/handle-no-script-tags
Handle no script tags in document

README.md

npm

matchMedia() polyfill

test whether a CSS media type or media query applies

How about resizing the browser?

Paul Hayes tackled this using CSS transitions and their transitionEnd event

His code: https://github.com/fofr/matchMedia.js -- though currently it doesnt support IE6-9, since they dont have transitions, obviously. :)

Usage

test 'tv' media type

if (matchMedia('tv').matches) {
  // tv media type supported
}

test a mobile device media query

if (matchMedia('only screen and (max-width: 480px)').matches) {
  // smartphone/iphone... maybe run some small-screen related dom scripting?
}

test landscape orientation

if (matchMedia('all and (orientation:landscape)').matches) {
  // probably tablet in widescreen view
}

Used in: