src/ajax/script.js

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