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