modernizr/feature-detects/history.js

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

/*!
{
  "name": "History API",
  "property": "history",
  "caniuse": "history",
  "tags": ["history"],
  "authors": ["Hay Kranen", "Alexander Farkas"],
  "notes": [{
    "name": "W3C Spec",
    "href": "http://www.w3.org/TR/html51/browsers.html#the-history-interface"
  }, {
    "name": "MDN documentation",
    "href": "https://developer.mozilla.org/en-US/docs/Web/API/window.history"
  }],
  "polyfills": ["historyjs", "html5historyapi"]
}
!*/
/* DOC

Detects support for the History API for manipulating the browser session history.

*/
define(['Modernizr'], function( Modernizr ) {
  Modernizr.addTest('history', function() {
    // Issue #733
    // The stock browser on Android 2.2 & 2.3 returns positive on history support
    // Unfortunately support is really buggy and there is no clean way to detect
    // these bugs, so we fall back to a user agent sniff :(
    var ua = navigator.userAgent;

    // We only want Android 2, stock browser, and not Chrome which identifies
    // itself as 'Mobile Safari' as well
    if (ua.indexOf('Android 2') !== -1 &&
        ua.indexOf('Mobile Safari') !== -1 &&
          ua.indexOf('Chrome') === -1) {
      return false;
    }

    // Return the regular check
    return (window.history && 'pushState' in history);
  });
});