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": 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 only deals with cross domain requests
  34         if ( s.crossDomain ) {
  35
  36                 var script,
  37                         head = document.getElementsByTagName( "head" )[ 0 ] || document.documentElement;
  38
  39                 return {
  40
  41                         send: function( _, callback ) {
  42
  43                                 script = document.createElement( "script" );
  44
  45                                 script.async = "async";
  46
  47                                 if ( s.scriptCharset ) {
  48                                         script.charset = s.scriptCharset;
  49                                 }
  50
  51                                 script.src = s.url;
  52
  53                                 // Attach handlers for all browsers
  54                                 script.onload = script.onreadystatechange = function( _, isAbort ) {
  55
  56                                         if ( !script.readyState || /loaded|complete/.test( script.readyState ) ) {
  57
  58                                                 // Handle memory leak in IE
  59                                                 script.onload = script.onreadystatechange = null;
  60
  61                                                 // Remove the script
  62                                                 if ( head && script.parentNode ) {
  63                                                         head.removeChild( script );
  64                                                 }
  65
  66                                                 // Dereference the script
  67                                                 script = undefined;
  68
  69                                                 // Callback if not abort
  70                                                 if ( !isAbort ) {
  71                                                         callback( 200, "success" );
  72                                                 }
  73                                         }
  74                                 };
  75                                 // Use insertBefore instead of appendChild  to circumvent an IE6 bug.
  76                                 // This arises when a base node is used (#2709 and #4378).
  77                                 head.insertBefore( script, head.firstChild );
  78                         },
  79
  80                         abort: function() {
  81                                 if ( script ) {
  82                                         script.onload( 0, 1 );
  83                                 }
  84                         }
  85                 };
  86         }
  87 } );
  88
  89 })( jQuery );