resources/src/startup.js

   1 /**
   2  * This script provides a function which is run to evaluate whether or not to
   3  * continue loading jQuery and the MediaWiki modules. This code should work on
   4  * even the most ancient of browsers, so be very careful when editing.
   5  */
   6
   7 var mediaWikiLoadStart = ( new Date() ).getTime();
   8
   9 if ( !window.performance ) {
  10         window.performance = {};
  11 }
  12 if ( !performance.mark ) {
  13         performance.mark = function () {};
  14 }
  15 performance.mark( 'mediaWikiStartUp' );
  16
  17 /**
  18  * Returns false for Grade C supported browsers.
  19  *
  20  * This function should only be used by the Startup module, do not expand it to
  21  * be generally useful beyond startup.
  22  *
  23  * See also:
  24  * - https://www.mediawiki.org/wiki/Compatibility#Browsers
  25  * - https://jquery.com/browser-support/
  26  */
  27
  28 /*jshint unused: false */
  29 function isCompatible( ua ) {
  30         if ( ua === undefined ) {
  31                 ua = navigator.userAgent;
  32         }
  33
  34         // Browsers with outdated or limited JavaScript engines get the no-JS experience
  35         return !(
  36                 // Internet Explorer < 8
  37                 ( ua.indexOf( 'MSIE' ) !== -1 && parseFloat( ua.split( 'MSIE' )[1] ) < 8 ) ||
  38                 // Firefox < 3
  39                 ( ua.indexOf( 'Firefox/' ) !== -1 && parseFloat( ua.split( 'Firefox/' )[1] ) < 3 ) ||
  40                 // Opera < 12
  41                 ( ua.indexOf( 'Opera/' ) !== -1 && ( ua.indexOf( 'Version/' ) === -1 ?
  42                         // "Opera/x.y"
  43                         parseFloat( ua.split( 'Opera/' )[1] ) < 10 :
  44                         // "Opera/9.80 ... Version/x.y"
  45                         parseFloat( ua.split( 'Version/' )[1] ) < 12
  46                 ) ) ||
  47                 // "Mozilla/0.0 ... Opera x.y"
  48                 ( ua.indexOf( 'Opera ' ) !== -1 && parseFloat( ua.split( ' Opera ' )[1] ) < 10 ) ||
  49                 // BlackBerry < 6
  50                 ua.match( /BlackBerry[^\/]*\/[1-5]\./ ) ||
  51                 // Open WebOS < 1.5
  52                 ua.match( /webOS\/1\.[0-4]/ ) ||
  53                 // Anything PlayStation based.
  54                 ua.match( /PlayStation/i ) ||
  55                 // Any Symbian based browsers
  56                 ua.match( /SymbianOS|Series60/ ) ||
  57                 // Any NetFront based browser
  58                 ua.match( /NetFront/ ) ||
  59                 // Opera Mini, all versions
  60                 ua.match( /Opera Mini/ ) ||
  61                 // Nokia's Ovi Browser
  62                 ua.match( /S40OviBrowser/ ) ||
  63                 // MeeGo's browser
  64                 ua.match( /MeeGo/ ) ||
  65                 // Google Glass browser groks JS but UI is too limited
  66                 ( ua.match( /Glass/ ) && ua.match( /Android/ ) )
  67         );
  68 }
  69
  70 /**
  71  * The startUp() function will be auto-generated and added below.
  72  */