src/ajax.js

   1 (function( jQuery ) {
   2
   3 var jsc = jQuery.now(),
   4         rscript = /<script(.|\s)*?\/script>/gi,
   5         rselectTextarea = /select|textarea/i,
   6         rinput = /color|date|datetime|email|hidden|month|number|password|range|search|tel|text|time|url|week/i,
   7         jsre = /\=\?(&|$)/,
   8         rquery = /\?/,
   9         rts = /(\?|&)_=.*?(&|$)/,
  10         rurl = /^(\w+:)?\/\/([^\/?#]+)/,
  11         r20 = /%20/g,
  12
  13         // Keep a copy of the old load method
  14         _load = jQuery.fn.load;
  15
  16 jQuery.fn.extend({
  17         load: function( url, params, callback ) {
  18                 if ( typeof url !== "string" && _load ) {
  19                         return _load.apply( this, arguments );
  20
  21                 // Don't do a request if no elements are being requested
  22                 } else if ( !this.length ) {
  23                         return this;
  24                 }
  25
  26                 var off = url.indexOf(" ");
  27                 if ( off >= 0 ) {
  28                         var selector = url.slice(off, url.length);
  29                         url = url.slice(0, off);
  30                 }
  31
  32                 // Default to a GET request
  33                 var type = "GET";
  34
  35                 // If the second parameter was provided
  36                 if ( params ) {
  37                         // If it's a function
  38                         if ( jQuery.isFunction( params ) ) {
  39                                 // We assume that it's the callback
  40                                 callback = params;
  41                                 params = null;
  42
  43                         // Otherwise, build a param string
  44                         } else if ( typeof params === "object" ) {
  45                                 params = jQuery.param( params, jQuery.ajaxSettings.traditional );
  46                                 type = "POST";
  47                         }
  48                 }
  49
  50                 var self = this;
  51
  52                 // Request the remote document
  53                 jQuery.ajax({
  54                         url: url,
  55                         type: type,
  56                         dataType: "html",
  57                         data: params,
  58                         complete: function( res, status ) {
  59                                 // If successful, inject the HTML into all the matched elements
  60                                 if ( status === "success" || status === "notmodified" ) {
  61                                         // See if a selector was specified
  62                                         self.html( selector ?
  63                                                 // Create a dummy div to hold the results
  64                                                 jQuery("<div />")
  65                                                         // inject the contents of the document in, removing the scripts
  66                                                         // to avoid any 'Permission Denied' errors in IE
  67                                                         .append(res.responseText.replace(rscript, ""))
  68
  69                                                         // Locate the specified elements
  70                                                         .find(selector) :
  71
  72                                                 // If not, just inject the full result
  73                                                 res.responseText );
  74                                 }
  75
  76                                 if ( callback ) {
  77                                         self.each( callback, [res.responseText, status, res] );
  78                                 }
  79                         }
  80                 });
  81
  82                 return this;
  83         },
  84
  85         serialize: function() {
  86                 return jQuery.param(this.serializeArray());
  87         },
  88
  89         serializeArray: function() {
  90                 return this.map(function() {
  91                         return this.elements ? jQuery.makeArray(this.elements) : this;
  92                 })
  93                 .filter(function() {
  94                         return this.name && !this.disabled &&
  95                                 (this.checked || rselectTextarea.test(this.nodeName) ||
  96                                         rinput.test(this.type));
  97                 })
  98                 .map(function( i, elem ) {
  99                         var val = jQuery(this).val();
 100
 101                         return val == null ?
 102                                 null :
 103                                 jQuery.isArray(val) ?
 104                                         jQuery.map( val, function( val, i ) {
 105                                                 return { name: elem.name, value: val };
 106                                         }) :
 107                                         { name: elem.name, value: val };
 108                 }).get();
 109         }
 110 });
 111
 112 // Attach a bunch of functions for handling common AJAX events
 113 jQuery.each( "ajaxStart ajaxStop ajaxComplete ajaxError ajaxSuccess ajaxSend".split(" "), function( i, o ) {
 114         jQuery.fn[o] = function( f ) {
 115                 return this.bind(o, f);
 116         };
 117 });
 118
 119 jQuery.extend({
 120         get: function( url, data, callback, type ) {
 121                 // shift arguments if data argument was omited
 122                 if ( jQuery.isFunction( data ) ) {
 123                         type = type || callback;
 124                         callback = data;
 125                         data = null;
 126                 }
 127
 128                 return jQuery.ajax({
 129                         type: "GET",
 130                         url: url,
 131                         data: data,
 132                         success: callback,
 133                         dataType: type
 134                 });
 135         },
 136
 137         getScript: function( url, callback ) {
 138                 return jQuery.get(url, null, callback, "script");
 139         },
 140
 141         getJSON: function( url, data, callback ) {
 142                 return jQuery.get(url, data, callback, "json");
 143         },
 144
 145         post: function( url, data, callback, type ) {
 146                 // shift arguments if data argument was omited
 147                 if ( jQuery.isFunction( data ) ) {
 148                         type = type || callback;
 149                         callback = data;
 150                         data = {};
 151                 }
 152
 153                 return jQuery.ajax({
 154                         type: "POST",
 155                         url: url,
 156                         data: data,
 157                         success: callback,
 158                         dataType: type
 159                 });
 160         },
 161
 162         ajaxSetup: function( settings ) {
 163                 jQuery.extend( jQuery.ajaxSettings, settings );
 164         },
 165
 166         ajaxSettings: {
 167                 url: location.href,
 168                 global: true,
 169                 type: "GET",
 170                 contentType: "application/x-www-form-urlencoded",
 171                 processData: true,
 172                 async: true,
 173                 /*
 174                 timeout: 0,
 175                 data: null,
 176                 username: null,
 177                 password: null,
 178                 traditional: false,
 179                 */
 180                 // Create the request object; Microsoft failed to properly
 181                 // implement the XMLHttpRequest in IE7 (can't request local files),
 182                 // so we use the ActiveXObject when it is available
 183                 // This function can be overriden by calling jQuery.ajaxSetup
 184                 xhr: window.XMLHttpRequest && (window.location.protocol !== "file:" || !window.ActiveXObject) ?
 185                         function() {
 186                                 return new window.XMLHttpRequest();
 187                         } :
 188                         function() {
 189                                 try {
 190                                         return new window.ActiveXObject("Microsoft.XMLHTTP");
 191                                 } catch(e) {}
 192                         },
 193                 accepts: {
 194                         xml: "application/xml, text/xml",
 195                         html: "text/html",
 196                         script: "text/javascript, application/javascript",
 197                         json: "application/json, text/javascript",
 198                         text: "text/plain",
 199                         _default: "*/*"
 200                 }
 201         },
 202
 203         ajax: function( origSettings ) {
 204                 var s = jQuery.extend(true, {}, jQuery.ajaxSettings, origSettings),
 205                         jsonp, status, data, type = s.type.toUpperCase();
 206
 207                 s.context = origSettings && origSettings.context || s;
 208
 209                 // convert data if not already a string
 210                 if ( s.data && s.processData && typeof s.data !== "string" ) {
 211                         s.data = jQuery.param( s.data, s.traditional );
 212                 }
 213
 214                 // Handle JSONP Parameter Callbacks
 215                 if ( s.dataType === "jsonp" ) {
 216                         if ( type === "GET" ) {
 217                                 if ( !jsre.test( s.url ) ) {
 218                                         s.url += (rquery.test( s.url ) ? "&" : "?") + (s.jsonp || "callback") + "=?";
 219                                 }
 220                         } else if ( !s.data || !jsre.test(s.data) ) {
 221                                 s.data = (s.data ? s.data + "&" : "") + (s.jsonp || "callback") + "=?";
 222                         }
 223                         s.dataType = "json";
 224                 }
 225
 226                 // Build temporary JSONP function
 227                 if ( s.dataType === "json" && (s.data && jsre.test(s.data) || jsre.test(s.url)) ) {
 228                         jsonp = s.jsonpCallback || ("jsonp" + jsc++);
 229
 230                         // Replace the =? sequence both in the query string and the data
 231                         if ( s.data ) {
 232                                 s.data = (s.data + "").replace(jsre, "=" + jsonp + "$1");
 233                         }
 234
 235                         s.url = s.url.replace(jsre, "=" + jsonp + "$1");
 236
 237                         // We need to make sure
 238                         // that a JSONP style response is executed properly
 239                         s.dataType = "script";
 240
 241                         // Handle JSONP-style loading
 242                         var customJsonp = window[ jsonp ];
 243
 244                         window[ jsonp ] = function( tmp ) {
 245                                 data = tmp;
 246                                 jQuery.ajax.handleSuccess( s, xhr, status, data );
 247                                 jQuery.ajax.handleComplete( s, xhr, status, data );
 248
 249                                 if ( jQuery.isFunction( customJsonp ) ) {
 250                                         customJsonp( tmp );
 251
 252                                 } else {
 253                                         // Garbage collect
 254                                         window[ jsonp ] = undefined;
 255
 256                                         try {
 257                                                 delete window[ jsonp ];
 258                                         } catch( jsonpError ) {}
 259                                 }
 260
 261                                 if ( head ) {
 262                                         head.removeChild( script );
 263                                 }
 264                         };
 265                 }
 266
 267                 if ( s.dataType === "script" && s.cache === null ) {
 268                         s.cache = false;
 269                 }
 270
 271                 if ( s.cache === false && type === "GET" ) {
 272                         var ts = jQuery.now();
 273
 274                         // try replacing _= if it is there
 275                         var ret = s.url.replace(rts, "$1_=" + ts + "$2");
 276
 277                         // if nothing was replaced, add timestamp to the end
 278                         s.url = ret + ((ret === s.url) ? (rquery.test(s.url) ? "&" : "?") + "_=" + ts : "");
 279                 }
 280
 281                 // If data is available, append data to url for get requests
 282                 if ( s.data && type === "GET" ) {
 283                         s.url += (rquery.test(s.url) ? "&" : "?") + s.data;
 284                 }
 285
 286                 // Watch for a new set of requests
 287                 if ( s.global && jQuery.ajax.active++ === 0 ) {
 288                         jQuery.event.trigger( "ajaxStart" );
 289                 }
 290
 291                 // Matches an absolute URL, and saves the domain
 292                 var parts = rurl.exec( s.url ),
 293                         remote = parts && (parts[1] && parts[1] !== location.protocol || parts[2] !== location.host);
 294
 295                 // If we're requesting a remote document
 296                 // and trying to load JSON or Script with a GET
 297                 if ( s.dataType === "script" && type === "GET" && remote ) {
 298                         var head = document.getElementsByTagName("head")[0] || document.documentElement;
 299                         var script = document.createElement("script");
 300                         script.src = s.url;
 301                         if ( s.scriptCharset ) {
 302                                 script.charset = s.scriptCharset;
 303                         }
 304
 305                         // Handle Script loading
 306                         if ( !jsonp ) {
 307                                 var done = false;
 308
 309                                 // Attach handlers for all browsers
 310                                 script.onload = script.onreadystatechange = function() {
 311                                         if ( !done && (!this.readyState ||
 312                                                         this.readyState === "loaded" || this.readyState === "complete") ) {
 313                                                 done = true;
 314                                                 jQuery.ajax.handleSuccess( s, xhr, status, data );
 315                                                 jQuery.ajax.handleComplete( s, xhr, status, data );
 316
 317                                                 // Handle memory leak in IE
 318                                                 script.onload = script.onreadystatechange = null;
 319                                                 if ( head && script.parentNode ) {
 320                                                         head.removeChild( script );
 321                                                 }
 322                                         }
 323                                 };
 324                         }
 325
 326                         // Use insertBefore instead of appendChild  to circumvent an IE6 bug.
 327                         // This arises when a base node is used (#2709 and #4378).
 328                         head.insertBefore( script, head.firstChild );
 329
 330                         // We handle everything using the script element injection
 331                         return undefined;
 332                 }
 333
 334                 var requestDone = false;
 335
 336                 // Create the request object
 337                 var xhr = s.xhr();
 338
 339                 if ( !xhr ) {
 340                         return;
 341                 }
 342
 343                 // Open the socket
 344                 // Passing null username, generates a login popup on Opera (#2865)
 345                 if ( s.username ) {
 346                         xhr.open(type, s.url, s.async, s.username, s.password);
 347                 } else {
 348                         xhr.open(type, s.url, s.async);
 349                 }
 350
 351                 // Need an extra try/catch for cross domain requests in Firefox 3
 352                 try {
 353                         // Set the correct header, if data is being sent
 354                         if ( s.data || origSettings && origSettings.contentType ) {
 355                                 xhr.setRequestHeader("Content-Type", s.contentType);
 356                         }
 357
 358                         // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
 359                         if ( s.ifModified ) {
 360                                 if ( jQuery.lastModified[s.url] ) {
 361                                         xhr.setRequestHeader("If-Modified-Since", jQuery.lastModified[s.url]);
 362                                 }
 363
 364                                 if ( jQuery.ajax.etag[s.url] ) {
 365                                         xhr.setRequestHeader("If-None-Match", jQuery.ajax.etag[s.url]);
 366                                 }
 367                         }
 368
 369                         // Set header so the called script knows that it's an XMLHttpRequest
 370                         // Only send the header if it's not a remote XHR
 371                         if ( !remote ) {
 372                                 xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
 373                         }
 374
 375                         // Set the Accepts header for the server, depending on the dataType
 376                         xhr.setRequestHeader("Accept", s.dataType && s.accepts[ s.dataType ] ?
 377                                 s.accepts[ s.dataType ] + ", */*" :
 378                                 s.accepts._default );
 379                 } catch( headerError ) {}
 380
 381                 // Allow custom headers/mimetypes and early abort
 382                 if ( s.beforeSend && s.beforeSend.call(s.context, xhr, s) === false ) {
 383                         // Handle the global AJAX counter
 384                         if ( s.global && jQuery.ajax.active-- === 1 ) {
 385                                 jQuery.event.trigger( "ajaxStop" );
 386                         }
 387
 388                         // close opended socket
 389                         xhr.abort();
 390                         return false;
 391                 }
 392
 393                 if ( s.global ) {
 394                         jQuery.ajax.triggerGlobal( s, "ajaxSend", [xhr, s] );
 395                 }
 396
 397                 // Wait for a response to come back
 398                 var onreadystatechange = xhr.onreadystatechange = function( isTimeout ) {
 399                         // The request was aborted
 400                         if ( !xhr || xhr.readyState === 0 || isTimeout === "abort" ) {
 401                                 // Opera doesn't call onreadystatechange before this point
 402                                 // so we simulate the call
 403                                 if ( !requestDone ) {
 404                                         jQuery.ajax.handleComplete( s, xhr, status, data );
 405                                 }
 406
 407                                 requestDone = true;
 408                                 if ( xhr ) {
 409                                         xhr.onreadystatechange = jQuery.noop;
 410                                 }
 411
 412                         // The transfer is complete and the data is available, or the request timed out
 413                         } else if ( !requestDone && xhr && (xhr.readyState === 4 || isTimeout === "timeout") ) {
 414                                 requestDone = true;
 415                                 xhr.onreadystatechange = jQuery.noop;
 416
 417                                 status = isTimeout === "timeout" ?
 418                                         "timeout" :
 419                                         !jQuery.ajax.httpSuccess( xhr ) ?
 420                                                 "error" :
 421                                                 s.ifModified && jQuery.ajax.httpNotModified( xhr, s.url ) ?
 422                                                         "notmodified" :
 423                                                         "success";
 424
 425                                 var errMsg;
 426
 427                                 if ( status === "success" ) {
 428                                         // Watch for, and catch, XML document parse errors
 429                                         try {
 430                                                 // process the data (runs the xml through httpData regardless of callback)
 431                                                 data = jQuery.ajax.httpData( xhr, s.dataType, s );
 432                                         } catch( parserError ) {
 433                                                 status = "parsererror";
 434                                                 errMsg = parserError;
 435                                         }
 436                                 }
 437
 438                                 // Make sure that the request was successful or notmodified
 439                                 if ( status === "success" || status === "notmodified" ) {
 440                                         // JSONP handles its own success callback
 441                                         if ( !jsonp ) {
 442                                                 jQuery.ajax.handleSuccess( s, xhr, status, data );
 443                                         }
 444                                 } else {
 445                                         jQuery.ajax.handleError( s, xhr, status, errMsg );
 446                                 }
 447
 448                                 // Fire the complete handlers
 449                                 if ( !jsonp ) {
 450                                         jQuery.ajax.handleComplete( s, xhr, status, data );
 451                                 }
 452
 453                                 if ( isTimeout === "timeout" ) {
 454                                         xhr.abort();
 455                                 }
 456
 457                                 // Stop memory leaks
 458                                 if ( s.async ) {
 459                                         xhr = null;
 460                                 }
 461                         }
 462                 };
 463
 464                 // Override the abort handler, if we can (IE doesn't allow it, but that's OK)
 465                 // Opera doesn't fire onreadystatechange at all on abort
 466                 try {
 467                         var oldAbort = xhr.abort;
 468                         xhr.abort = function() {
 469                                 if ( xhr ) {
 470                                         oldAbort.call( xhr );
 471                                 }
 472
 473                                 onreadystatechange( "abort" );
 474                         };
 475                 } catch( abortError ) {}
 476
 477                 // Timeout checker
 478                 if ( s.async && s.timeout > 0 ) {
 479                         setTimeout(function() {
 480                                 // Check to see if the request is still happening
 481                                 if ( xhr && !requestDone ) {
 482                                         onreadystatechange( "timeout" );
 483                                 }
 484                         }, s.timeout);
 485                 }
 486
 487                 // Send the data
 488                 try {
 489                         xhr.send( (type !== "GET" && s.data) || null );
 490
 491                 } catch( sendError ) {
 492                         jQuery.ajax.handleError( s, xhr, null, e );
 493
 494                         // Fire the complete handlers
 495                         jQuery.ajax.handleComplete( s, xhr, status, data );
 496                 }
 497
 498                 // firefox 1.5 doesn't fire statechange for sync requests
 499                 if ( !s.async ) {
 500                         onreadystatechange();
 501                 }
 502
 503                 // return XMLHttpRequest to allow aborting the request etc.
 504                 return xhr;
 505         },
 506
 507         // Serialize an array of form elements or a set of
 508         // key/values into a query string
 509         param: function( a, traditional ) {
 510                 var s = [], add = function( key, value ) {
 511                         // If value is a function, invoke it and return its value
 512                         value = jQuery.isFunction(value) ? value() : value;
 513                         s[ s.length ] = encodeURIComponent(key) + "=" + encodeURIComponent(value);
 514                 };
 515
 516                 // Set traditional to true for jQuery <= 1.3.2 behavior.
 517                 if ( traditional === undefined ) {
 518                         traditional = jQuery.ajaxSettings.traditional;
 519                 }
 520
 521                 // If an array was passed in, assume that it is an array of form elements.
 522                 if ( jQuery.isArray(a) || a.jquery ) {
 523                         // Serialize the form elements
 524                         jQuery.each( a, function() {
 525                                 add( this.name, this.value );
 526                         });
 527
 528                 } else {
 529                         // If traditional, encode the "old" way (the way 1.3.2 or older
 530                         // did it), otherwise encode params recursively.
 531                         for ( var prefix in a ) {
 532                                 buildParams( prefix, a[prefix], traditional, add );
 533                         }
 534                 }
 535
 536                 // Return the resulting serialization
 537                 return s.join("&").replace(r20, "+");
 538         }
 539 });
 540
 541 function buildParams( prefix, obj, traditional, add ) {
 542         if ( jQuery.isArray(obj) ) {
 543                 // Serialize array item.
 544                 jQuery.each( obj, function( i, v ) {
 545                         if ( traditional || /\[\]$/.test( prefix ) ) {
 546                                 // Treat each array item as a scalar.
 547                                 add( prefix, v );
 548
 549                         } else {
 550                                 // If array item is non-scalar (array or object), encode its
 551                                 // numeric index to resolve deserialization ambiguity issues.
 552                                 // Note that rack (as of 1.0.0) can't currently deserialize
 553                                 // nested arrays properly, and attempting to do so may cause
 554                                 // a server error. Possible fixes are to modify rack's
 555                                 // deserialization algorithm or to provide an option or flag
 556                                 // to force array serialization to be shallow.
 557                                 buildParams( prefix + "[" + ( typeof v === "object" || jQuery.isArray(v) ? i : "" ) + "]", v, traditional, add );
 558                         }
 559                 });
 560
 561         } else if ( !traditional && obj != null && typeof obj === "object" ) {
 562                 // Serialize object item.
 563                 jQuery.each( obj, function( k, v ) {
 564                         buildParams( prefix + "[" + k + "]", v, traditional, add );
 565                 });
 566
 567         } else {
 568                 // Serialize scalar item.
 569                 add( prefix, obj );
 570         }
 571 }
 572
 573 jQuery.extend( jQuery.ajax, {
 574
 575         // Counter for holding the number of active queries
 576         active: 0,
 577
 578         // Last-Modified header cache for next request
 579         lastModified: {},
 580         etag: {},
 581
 582         handleError: function( s, xhr, status, e ) {
 583                 // If a local callback was specified, fire it
 584                 if ( s.error ) {
 585                         s.error.call( s.context, xhr, status, e );
 586                 }
 587
 588                 // Fire the global callback
 589                 if ( s.global ) {
 590                         jQuery.ajax.triggerGlobal( s, "ajaxError", [xhr, s, e] );
 591                 }
 592         },
 593
 594         handleSuccess: function( s, xhr, status, data ) {
 595                 // If a local callback was specified, fire it and pass it the data
 596                 if ( s.success ) {
 597                         s.success.call( s.context, data, status, xhr );
 598                 }
 599
 600                 // Fire the global callback
 601                 if ( s.global ) {
 602                         jQuery.ajax.triggerGlobal( s, "ajaxSuccess", [xhr, s] );
 603                 }
 604         },
 605
 606         handleComplete: function( s, xhr, status ) {
 607                 // Process result
 608                 if ( s.complete ) {
 609                         s.complete.call( s.context, xhr, status );
 610                 }
 611
 612                 // The request was completed
 613                 if ( s.global ) {
 614                         jQuery.ajax.triggerGlobal( s, "ajaxComplete", [xhr, s] );
 615                 }
 616
 617                 // Handle the global AJAX counter
 618                 if ( s.global && jQuery.ajax.active-- === 1 ) {
 619                         jQuery.event.trigger( "ajaxStop" );
 620                 }
 621         },
 622
 623         triggerGlobal: function( s, type, args ) {
 624                 (s.context && s.context.url == null ? jQuery(s.context) : jQuery.event).trigger(type, args);
 625         },
 626
 627         // Determines if an XMLHttpRequest was successful or not
 628         httpSuccess: function( xhr ) {
 629                 try {
 630                         // IE error sometimes returns 1223 when it should be 204 so treat it as success, see #1450
 631                         return !xhr.status && location.protocol === "file:" ||
 632                                 // Opera returns 0 when status is 304
 633                                 ( xhr.status >= 200 && xhr.status < 300 ) ||
 634                                 xhr.status === 304 || xhr.status === 1223 || xhr.status === 0;
 635                 } catch(e) {}
 636
 637                 return false;
 638         },
 639
 640         // Determines if an XMLHttpRequest returns NotModified
 641         httpNotModified: function( xhr, url ) {
 642                 var lastModified = xhr.getResponseHeader("Last-Modified"),
 643                         etag = xhr.getResponseHeader("Etag");
 644
 645                 if ( lastModified ) {
 646                         jQuery.ajax.lastModified[url] = lastModified;
 647                 }
 648
 649                 if ( etag ) {
 650                         jQuery.ajax.etag[url] = etag;
 651                 }
 652
 653                 // Opera returns 0 when status is 304
 654                 return xhr.status === 304 || xhr.status === 0;
 655         },
 656
 657         httpData: function( xhr, type, s ) {
 658                 var ct = xhr.getResponseHeader("content-type") || "",
 659                         xml = type === "xml" || !type && ct.indexOf("xml") >= 0,
 660                         data = xml ? xhr.responseXML : xhr.responseText;
 661
 662                 if ( xml && data.documentElement.nodeName === "parsererror" ) {
 663                         jQuery.error( "parsererror" );
 664                 }
 665
 666                 // Allow a pre-filtering function to sanitize the response
 667                 // s is checked to keep backwards compatibility
 668                 if ( s && s.dataFilter ) {
 669                         data = s.dataFilter( data, type );
 670                 }
 671
 672                 // The filter can actually parse the response
 673                 if ( typeof data === "string" ) {
 674                         // Get the JavaScript object, if JSON is used.
 675                         if ( type === "json" || !type && ct.indexOf("json") >= 0 ) {
 676                                 data = jQuery.parseJSON( data );
 677
 678                         // If the type is "script", eval it in global context
 679                         } else if ( type === "script" || !type && ct.indexOf("javascript") >= 0 ) {
 680                                 jQuery.globalEval( data );
 681                         }
 682                 }
 683
 684                 return data;
 685         }
 686
 687 });
 688
 689 // Does this browser support XHR requests?
 690 jQuery.support.ajax = !!jQuery.ajaxSettings.xhr();
 691
 692 // For backwards compatibility
 693 jQuery.extend( jQuery.ajax );
 694
 695 })( jQuery );