modernizr/feature-detects/url/parser.js

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

/*!
{
  "name": "URL parser",
  "property": "urlparser",
  "notes": [{
    "name": "URL",
    "href": "https://dvcs.w3.org/hg/url/raw-file/tip/Overview.html"
  }],
  "polyfills": ["urlparser"],
  "authors": ["Ron Waldon (@jokeyrhyme)"],
  "tags": ["url"]
}
!*/
/* DOC
Check if browser implements the URL constructor for parsing URLs.
*/
define(['Modernizr'], function(Modernizr) {
  Modernizr.addTest('urlparser', function() {
    var url;
    try {
      // have to actually try use it, because Safari defines a dud constructor
      url = new URL('http://modernizr.com/');
      return url.href === 'http://modernizr.com/';
    } catch (e) {
      return false;
    }
  });
});