src/ajax/script.js

   1 (function( jQuery ) {
   2
   3 // Install script dataType
   4 jQuery.ajaxSetup({
   5         accepts: {
   6                 script: "text/javascript, application/javascript, application/ecmascript, application/x-ecmascript"
   7         },
   8         contents: {
   9                 script: /javascript|ecmascript/
  10         },
  11         converters: {
  12                 "text script": function( text ) {
  13                         jQuery.globalEval( text );
  14                         return text;
  15                 }
  16         }
  17 });
  18
  19 // Handle cache's special case and global
  20 jQuery.ajaxPrefilter( "script", function( s ) {
  21         if ( s.cache === undefined ) {
  22                 s.cache = false;
  23         }
  24         if ( s.crossDomain ) {
  25                 s.type = "GET";
  26                 s.global = false;
  27         }
  28 } );
  29
  30 // Bind script tag hack transport
  31 jQuery.ajaxTransport( "script", function(s) {
  32
  33         // This transport primarily deals with cross domain requests
  34         // but also sameDomain request within file:// due to
  35         // http://code.google.com/p/chromium/issues/detail?id=4197 + 47416
  36         var local = location.protocol === 'file:';
  37         if ( s.crossDomain || local ) {
  38
  39                 var script,
  40                         head = document.head || document.getElementsByTagName( "head" )[0] || document.documentElement;
  41
  42                 return {
  43
  44                         send: function( _, callback ) {
  45
  46                                 script = document.createElement( "script" );
  47
  48                                 script.async = "async";
  49
  50                                 if ( s.scriptCharset ) {
  51                                         script.charset = s.scriptCharset;
  52                                 }
  53
  54                                 script.src = s.url;
  55
  56                                 // Attach handlers for all browsers
  57                                 script.onload = script.onreadystatechange = function( _, isAbort ) {
  58
  59                                         if ( !script.readyState || /loaded|complete/.test( script.readyState ) ) {
  60
  61                                                 // Handle memory leak in IE
  62                                                 script.onload = script.onreadystatechange = null;
  63
  64                                                 // Remove the script
  65                                                 if ( head && script.parentNode ) {
  66                                                         head.removeChild( script );
  67                                                 }
  68
  69                                                 // Dereference the script
  70                                                 script = undefined;
  71
  72                                                 // Callback if not abort
  73                                                 if ( !isAbort ) {
  74                                                         callback( 200, "success" );
  75                                                 }
  76                                         }
  77                                 };
  78                                 // Use insertBefore instead of appendChild  to circumvent an IE6 bug.
  79                                 // This arises when a base node is used (#2709 and #4378).
  80                                 head.insertBefore( script, head.firstChild );
  81                         },
  82
  83                         abort: function() {
  84                                 if ( script ) {
  85                                         script.onload( 0, 1 );
  86                                 }
  87                         }
  88                 };
  89         }
  90 } );
  91
  92 })( jQuery );