src/ajax/script.js

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