Polyfill history.js using Modernizr

polyfill.js

  Modernizr.addTest('history', function() {
    var ua = navigator.userAgent;

    if ((ua.indexOf('Android 2.') !== -1 ||
        (ua.indexOf('Android 4.0') !== -1)) &&
        ua.indexOf('Mobile Safari') !== -1 &&
        ua.indexOf('Chrome') === -1 &&
        ua.indexOf('Windows Phone') === -1) {
      return false;
    }

    // Return the regular check
    return (window.history && 'pushState' in window.history);
  });
  
  if (!Modernizr.history) {
    yepnope('/path/to/history.js');
  }