Clean trailing whitespace from all files.
[jquery.git] / src / ajax.js
index 9501e8a..08fbe6f 100644 (file)
@@ -1,20 +1,19 @@
-var jsc = now(),
-       rscript = /<script(.|\s)*?\/script>/gi,
-       rselectTextarea = /select|textarea/i,
-       rinput = /color|date|datetime|email|hidden|month|number|password|range|search|tel|text|time|url|week/i,
-       jsre = /=\?(&|$)/,
+(function( jQuery ) {
+
+var rscript = /<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi,
+       rselectTextarea = /^(?:select|textarea)/i,
+       rinput = /^(?:color|date|datetime|email|hidden|month|number|password|range|search|tel|text|time|url|week)$/i,
+       rbracket = /\[\]$/,
        rquery = /\?/,
-       rts = /(\?|&)_=.*?(&|$)/,
-       rurl = /^(\w+:)?\/\/([^\/?#]+)/,
-       r20 = /%20/g;
+       r20 = /%20/g,
 
-jQuery.fn.extend({
-       // Keep a copy of the old load
-       _load: jQuery.fn.load,
+       // Keep a copy of the old load method
+       _load = jQuery.fn.load;
 
+jQuery.fn.extend({
        load: function( url, params, callback ) {
-               if ( typeof url !== "string" ) {
-                       return this._load( url );
+               if ( typeof url !== "string" && _load ) {
+                       return _load.apply( this, arguments );
 
                // Don't do a request if no elements are being requested
                } else if ( !this.length ) {
@@ -45,20 +44,21 @@ jQuery.fn.extend({
                        }
                }
 
+               var self = this;
+
                // Request the remote document
                jQuery.ajax({
                        url: url,
                        type: type,
                        dataType: "html",
                        data: params,
-                       context:this,
                        complete: function( res, status ) {
                                // If successful, inject the HTML into all the matched elements
                                if ( status === "success" || status === "notmodified" ) {
                                        // See if a selector was specified
-                                       this.html( selector ?
+                                       self.html( selector ?
                                                // Create a dummy div to hold the results
-                                               jQuery("<div />")
+                                               jQuery("<div>")
                                                        // inject the contents of the document in, removing the scripts
                                                        // to avoid any 'Permission Denied' errors in IE
                                                        .append(res.responseText.replace(rscript, ""))
@@ -71,7 +71,7 @@ jQuery.fn.extend({
                                }
 
                                if ( callback ) {
-                                       this.each( callback, [res.responseText, status, res] );
+                                       self.each( callback, [res.responseText, status, res] );
                                }
                        }
                });
@@ -82,39 +82,39 @@ jQuery.fn.extend({
        serialize: function() {
                return jQuery.param(this.serializeArray());
        },
+
        serializeArray: function() {
-               return this.map(function() {
+               return this.map(function(){
                        return this.elements ? jQuery.makeArray(this.elements) : this;
                })
-               .filter(function() {
+               .filter(function(){
                        return this.name && !this.disabled &&
                                (this.checked || rselectTextarea.test(this.nodeName) ||
                                        rinput.test(this.type));
                })
-               .map(function( i, elem ) {
+               .map(function(i, elem){
                        var val = jQuery(this).val();
 
                        return val == null ?
                                null :
                                jQuery.isArray(val) ?
-                                       jQuery.map( val, function( val, i ) {
-                                               return { name: elem.name, value: val };
+                                       jQuery.map( val, function(val, i){
+                                               return {name: elem.name, value: val};
                                        }) :
-                                       { name: elem.name, value: val };
+                                       {name: elem.name, value: val};
                }).get();
        }
 });
 
 // Attach a bunch of functions for handling common AJAX events
-jQuery.each( "ajaxStart ajaxStop ajaxComplete ajaxError ajaxSuccess ajaxSend".split(" "), function( i, o ) {
-       jQuery.fn[o] = function( f ) {
+jQuery.each( "ajaxStart ajaxStop ajaxComplete ajaxError ajaxSuccess ajaxSend".split(" "), function(i,o){
+       jQuery.fn[o] = function(f){
                return this.bind(o, f);
        };
 });
 
-jQuery.extend({
-
-       get: function( url, data, callback, type ) {
+jQuery.each( [ "get", "post" ], function( i, method ) {
+       jQuery[ method ] = function( url, data, callback, type ) {
                // shift arguments if data argument was omited
                if ( jQuery.isFunction( data ) ) {
                        type = type || callback;
@@ -123,13 +123,16 @@ jQuery.extend({
                }
 
                return jQuery.ajax({
-                       type: "GET",
+                       type: method,
                        url: url,
                        data: data,
                        success: callback,
                        dataType: type
                });
-       },
+       };
+});
+
+jQuery.extend({
 
        getScript: function( url, callback ) {
                return jQuery.get(url, null, callback, "script");
@@ -139,23 +142,6 @@ jQuery.extend({
                return jQuery.get(url, data, callback, "json");
        },
 
-       post: function( url, data, callback, type ) {
-               // shift arguments if data argument was omited
-               if ( jQuery.isFunction( data ) ) {
-                       type = type || callback;
-                       callback = data;
-                       data = {};
-               }
-
-               return jQuery.ajax({
-                       type: "POST",
-                       url: url,
-                       data: data,
-                       success: callback,
-                       dataType: type
-               });
-       },
-
        ajaxSetup: function( settings ) {
                jQuery.extend( jQuery.ajaxSettings, settings );
        },
@@ -170,489 +156,236 @@ jQuery.extend({
                /*
                timeout: 0,
                data: null,
+               dataType: null,
+               dataTypes: null,
                username: null,
                password: null,
+               cache: null,
                traditional: false,
                */
-               // Create the request object; Microsoft failed to properly
-               // implement the XMLHttpRequest in IE7 (can't request local files),
-               // so we use the ActiveXObject when it is available
-               // This function can be overriden by calling jQuery.ajaxSetup
                xhr: function() {
-                       if ( window.XMLHttpRequest && (window.location.protocol !== "file:" || !window.ActiveXObject) ) {
-                               return new window.XMLHttpRequest();
-
-                       } else {
-                               try {
-                                       return new window.ActiveXObject("Microsoft.XMLHTTP");
-                               } catch(e) {}
-                       }
+                       return new window.XMLHttpRequest();
+               },
+               xhrResponseFields: {
+                       xml: "XML",
+                       text: "Text",
+                       json: "JSON"
                },
+
                accepts: {
                        xml: "application/xml, text/xml",
                        html: "text/html",
-                       script: "text/javascript, application/javascript",
-                       json: "application/json, text/javascript",
                        text: "text/plain",
-                       _default: "*/*"
-               }
-       },
-
-       // Last-Modified header cache for next request
-       lastModified: {},
-       etag: {},
-
-       ajax: function( origSettings ) {
-               var s = jQuery.extend(true, {}, jQuery.ajaxSettings, origSettings);
-               
-               var jsonp, status, data,
-                       callbackContext = s.context || s,
-                       type = s.type.toUpperCase();
-
-               // convert data if not already a string
-               if ( s.data && s.processData && typeof s.data !== "string" ) {
-                       s.data = jQuery.param( s.data, s.traditional );
-               }
-
-               // Handle JSONP Parameter Callbacks
-               if ( s.dataType === "jsonp" ) {
-                       if ( type === "GET" ) {
-                               if ( !jsre.test( s.url ) ) {
-                                       s.url += (rquery.test( s.url ) ? "&" : "?") + (s.jsonp || "callback") + "=?";
-                               }
-                       } else if ( !s.data || !jsre.test(s.data) ) {
-                               s.data = (s.data ? s.data + "&" : "") + (s.jsonp || "callback") + "=?";
-                       }
-                       s.dataType = "json";
-               }
-
-               // Build temporary JSONP function
-               if ( s.dataType === "json" && (s.data && jsre.test(s.data) || jsre.test(s.url)) ) {
-                       jsonp = s.jsonpCallback || ("jsonp" + jsc++);
-
-                       // Replace the =? sequence both in the query string and the data
-                       if ( s.data ) {
-                               s.data = (s.data + "").replace(jsre, "=" + jsonp + "$1");
-                       }
-
-                       s.url = s.url.replace(jsre, "=" + jsonp + "$1");
+                       json: "application/json, text/javascript",
+                       "*": "*/*"
+               },
 
-                       // We need to make sure
-                       // that a JSONP style response is executed properly
-                       s.dataType = "script";
+               autoDataType: {
+                       xml: /xml/,
+                       html: /html/,
+                       json: /json/
+               },
 
-                       // Handle JSONP-style loading
-                       window[ jsonp ] = window[ jsonp ] || function( tmp ) {
-                               data = tmp;
-                               success();
-                               complete();
-                               // Garbage collect
-                               window[ jsonp ] = undefined;
+               // Prefilters
+               // 1) They are useful to introduce custom dataTypes (see transport/jsonp for an example)
+               // 2) These are called:
+               //    * BEFORE asking for a transport
+               //    * AFTER param serialization (s.data is a string if s.processData is true)
+               // 3) They MUST be order agnostic
+               prefilters: [],
+
+               // Transports bindings
+               // 1) key is the dataType
+               // 2) the catchall symbol "*" can be used
+               // 3) selection will start with transport dataType and THEN go to "*" if needed
+               transports: {
+               },
 
-                               try {
-                                       delete window[ jsonp ];
-                               } catch(e) {}
+               // Checkers
+               // 1) key is dataType
+               // 2) they are called to control successful response
+               // 3) error throws is used as error data
+               dataCheckers: {
 
-                               if ( head ) {
-                                       head.removeChild( script );
+                       // Check if data is a string
+                       "text": function(data) {
+                               if ( typeof data != "string" ) {
+                                       jQuery.error("typeerror");
                                }
-                       };
-               }
-
-               if ( s.dataType === "script" && s.cache === null ) {
-                       s.cache = false;
-               }
-
-               if ( s.cache === false && type === "GET" ) {
-                       var ts = now();
-
-                       // try replacing _= if it is there
-                       var ret = s.url.replace(rts, "$1_=" + ts + "$2");
-
-                       // if nothing was replaced, add timestamp to the end
-                       s.url = ret + ((ret === s.url) ? (rquery.test(s.url) ? "&" : "?") + "_=" + ts : "");
-               }
-
-               // If data is available, append data to url for get requests
-               if ( s.data && type === "GET" ) {
-                       s.url += (rquery.test(s.url) ? "&" : "?") + s.data;
-               }
-
-               // Watch for a new set of requests
-               if ( s.global && ! jQuery.active++ ) {
-                       jQuery.event.trigger( "ajaxStart" );
-               }
-
-               // Matches an absolute URL, and saves the domain
-               var parts = rurl.exec( s.url ),
-                       remote = parts && (parts[1] && parts[1] !== location.protocol || parts[2] !== location.host);
-
-               // If we're requesting a remote document
-               // and trying to load JSON or Script with a GET
-               if ( s.dataType === "script" && type === "GET" && remote ) {
-                       var head = document.getElementsByTagName("head")[0] || document.documentElement;
-                       var script = document.createElement("script");
-                       script.src = s.url;
-                       if ( s.scriptCharset ) {
-                               script.charset = s.scriptCharset;
-                       }
-
-                       // Handle Script loading
-                       if ( !jsonp ) {
-                               var done = false;
-
-                               // Attach handlers for all browsers
-                               script.onload = script.onreadystatechange = function() {
-                                       if ( !done && (!this.readyState ||
-                                                       this.readyState === "loaded" || this.readyState === "complete") ) {
-                                               done = true;
-                                               success();
-                                               complete();
-
-                                               // Handle memory leak in IE
-                                               script.onload = script.onreadystatechange = null;
-                                               if ( head && script.parentNode ) {
-                                                       head.removeChild( script );
-                                               }
-                                       }
-                               };
-                       }
-
-                       // Use insertBefore instead of appendChild  to circumvent an IE6 bug.
-                       // This arises when a base node is used (#2709 and #4378).
-                       head.insertBefore( script, head.firstChild );
-
-                       // We handle everything using the script element injection
-                       return undefined;
-               }
-
-               var requestDone = false;
+                       },
 
-               // Create the request object
-               var xhr = s.xhr();
-
-               if ( !xhr ) {
-                       return;
-               }
-
-               // Open the socket
-               // Passing null username, generates a login popup on Opera (#2865)
-               if ( s.username ) {
-                       xhr.open(type, s.url, s.async, s.username, s.password);
-               } else {
-                       xhr.open(type, s.url, s.async);
-               }
-
-               // Need an extra try/catch for cross domain requests in Firefox 3
-               try {
-                       // Set the correct header, if data is being sent
-                       if ( s.data || origSettings && origSettings.contentType ) {
-                               xhr.setRequestHeader("Content-Type", s.contentType);
-                       }
-
-                       // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
-                       if ( s.ifModified ) {
-                               if ( jQuery.lastModified[s.url] ) {
-                                       xhr.setRequestHeader("If-Modified-Since", jQuery.lastModified[s.url]);
+                       // Check if xml has been properly parsed
+                       "xml": function(data) {
+                               var documentElement = data ? data.documentElement : data;
+                               if ( ! documentElement || ! documentElement.nodeName ) {
+                                       jQuery.error("typeerror");
                                }
-
-                               if ( jQuery.etag[s.url] ) {
-                                       xhr.setRequestHeader("If-None-Match", jQuery.etag[s.url]);
+                               if ( documentElement.nodeName == "parsererror" ) {
+                                       jQuery.error("parsererror");
                                }
                        }
+               },
 
-                       // Set header so the called script knows that it's an XMLHttpRequest
-                       // Only send the header if it's not a remote XHR
-                       if ( !remote ) {
-                               xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
-                       }
-
-                       // Set the Accepts header for the server, depending on the dataType
-                       xhr.setRequestHeader("Accept", s.dataType && s.accepts[ s.dataType ] ?
-                               s.accepts[ s.dataType ] + ", */*" :
-                               s.accepts._default );
-               } catch(e) {}
-
-               // Allow custom headers/mimetypes and early abort
-               if ( s.beforeSend && s.beforeSend.call(callbackContext, xhr, s) === false ) {
-                       // Handle the global AJAX counter
-                       if ( s.global && ! --jQuery.active ) {
-                               jQuery.event.trigger( "ajaxStop" );
-                       }
-
-                       // close opended socket
-                       xhr.abort();
-                       return false;
-               }
-
-               if ( s.global ) {
-                       trigger("ajaxSend", [xhr, s]);
-               }
-
-               // Wait for a response to come back
-               var onreadystatechange = xhr.onreadystatechange = function( isTimeout ) {
-                       // The request was aborted, clear the interval and decrement jQuery.active
-                       if ( !xhr || xhr.readyState === 0 ) {
-                               requestDone = true;
-                               xhr.onreadystatechange = jQuery.noop;
-
-                               // Handle the global AJAX counter
-                               if ( s.global && ! --jQuery.active ) {
-                                       jQuery.event.trigger( "ajaxStop" );
-                               }
-
-                       // The transfer is complete and the data is available, or the request timed out
-                       } else if ( !requestDone && xhr && (xhr.readyState === 4 || isTimeout === "timeout") ) {
-                               requestDone = true;
-                               xhr.onreadystatechange = jQuery.noop;
-
-                               status = isTimeout === "timeout" ?
-                                       "timeout" :
-                                       !jQuery.httpSuccess( xhr ) ?
-                                               "error" :
-                                               s.ifModified && jQuery.httpNotModified( xhr, s.url ) ?
-                                                       "notmodified" :
-                                                       "success";
-
-                               if ( status === "success" ) {
-                                       // Watch for, and catch, XML document parse errors
-                                       try {
-                                               // process the data (runs the xml through httpData regardless of callback)
-                                               data = jQuery.httpData( xhr, s.dataType, s );
-                                       } catch(e) {
-                                               status = "parsererror";
-                                       }
-                               }
-
-                               // Make sure that the request was successful or notmodified
-                               if ( status === "success" || status === "notmodified" ) {
-                                       // JSONP handles its own success callback
-                                       if ( !jsonp ) {
-                                               success();
-                                       }
-                               } else {
-                                       jQuery.handleError(s, xhr, status);
-                               }
-
-                               // Fire the complete handlers
-                               complete();
-
-                               if ( isTimeout === "timeout" ) {
-                                       xhr.abort();
-                               }
-
-                               // Stop memory leaks
-                               if ( s.async ) {
-                                       xhr = null;
-                               }
-                       }
-               };
-
-               // Timeout checker
-               if ( s.async && s.timeout > 0 ) {
-                       setTimeout(function() {
-                               // Check to see if the request is still happening
-                               if ( xhr && !requestDone ) {
-                                       onreadystatechange( "timeout" );
+               // List of data converters
+               // 1) key format is "source_type => destination_type" (spaces required)
+               // 2) the catchall symbol "*" can be used for source_type
+               dataConverters: {
+
+                       // Convert anything to text
+                       "* => text": function(data) {
+                               return "" + data;
+                       },
+
+                       // Text to html (no transformation)
+                       "text => html": function(data) {
+                               return data;
+                       },
+
+                       // Evaluate text as a json expression
+                       "text => json": jQuery.parseJSON,
+
+                       // Parse text as xml
+                       "text => xml": function(data) {
+                               var xml, parser;
+                               if ( window.DOMParser ) { // Standard
+                                       parser = new DOMParser();
+                                       xml = parser.parseFromString(data,"text/xml");
+                               } else { // IE
+                                       xml = new ActiveXObject("Microsoft.XMLDOM");
+                                       xml.async="false";
+                                       xml.loadXML(data);
                                }
-                       }, s.timeout);
-               }
-
-               // Send the data
-               try {
-                       xhr.send( type === "POST" || type === "PUT" ? s.data : null );
-               } catch(e) {
-                       jQuery.handleError(s, xhr, null, e);
-                       // Fire the complete handlers
-                       complete();
-               }
-
-               // firefox 1.5 doesn't fire statechange for sync requests
-               if ( !s.async ) {
-                       onreadystatechange();
-               }
-
-               function success() {
-                       // If a local callback was specified, fire it and pass it the data
-                       if ( s.success ) {
-                               s.success.call( callbackContext, data, status, xhr );
-                       }
-
-                       // Fire the global callback
-                       if ( s.global ) {
-                               trigger( "ajaxSuccess", [xhr, s] );
-                       }
-               }
-
-               function complete() {
-                       // Process result
-                       if ( s.complete ) {
-                               s.complete.call( callbackContext, xhr, status);
-                       }
-
-                       // The request was completed
-                       if ( s.global ) {
-                               trigger( "ajaxComplete", [xhr, s] );
+                               return xml;
                        }
-
-                       // Handle the global AJAX counter
-                       if ( s.global && ! --jQuery.active ) {
-                               jQuery.event.trigger( "ajaxStop" );
-                       }
-               }
-               
-               function trigger(type, args) {
-                       (s.context ? jQuery(s.context) : jQuery.event).trigger(type, args);
-               }
-
-               // return XMLHttpRequest to allow aborting the request etc.
-               return xhr;
-       },
-
-       handleError: function( s, xhr, status, e ) {
-               // If a local callback was specified, fire it
-               if ( s.error ) {
-                       s.error.call( s.context || window, xhr, status, e );
-               }
-
-               // Fire the global callback
-               if ( s.global ) {
-                       (s.context ? jQuery(s.context) : jQuery.event).trigger( "ajaxError", [xhr, s, e] );
                }
        },
 
-       // Counter for holding the number of active queries
-       active: 0,
-
-       // Determines if an XMLHttpRequest was successful or not
-       httpSuccess: function( xhr ) {
-               try {
-                       // IE error sometimes returns 1223 when it should be 204 so treat it as success, see #1450
-                       return !xhr.status && location.protocol === "file:" ||
-                               // Opera returns 0 when status is 304
-                               ( xhr.status >= 200 && xhr.status < 300 ) ||
-                               xhr.status === 304 || xhr.status === 1223 || xhr.status === 0;
-               } catch(e) {}
-
-               return false;
-       },
-
-       // Determines if an XMLHttpRequest returns NotModified
-       httpNotModified: function( xhr, url ) {
-               var lastModified = xhr.getResponseHeader("Last-Modified"),
-                       etag = xhr.getResponseHeader("Etag");
-
-               if ( lastModified ) {
-                       jQuery.lastModified[url] = lastModified;
-               }
-
-               if ( etag ) {
-                       jQuery.etag[url] = etag;
-               }
-
-               // Opera returns 0 when status is 304
-               return xhr.status === 304 || xhr.status === 0;
-       },
-
-       httpData: function( xhr, type, s ) {
-               var ct = xhr.getResponseHeader("content-type") || "",
-                       xml = type === "xml" || !type && ct.indexOf("xml") >= 0,
-                       data = xml ? xhr.responseXML : xhr.responseText;
-
-               if ( xml && data.documentElement.nodeName === "parsererror" ) {
-                       throw "parsererror";
-               }
+       // Main method
+       ajax: function( url , s ) {
 
-               // Allow a pre-filtering function to sanitize the response
-               // s is checked to keep backwards compatibility
-               if ( s && s.dataFilter ) {
-                       data = s.dataFilter( data, type );
+               if ( arguments.length === 1 ) {
+                       s = url;
+                       url = s ? s.url : undefined;
                }
 
-               // The filter can actually parse the response
-               if ( typeof data === "string" ) {
-                       // If the type is "script", eval it in global context
-                       if ( type === "script" || !type && ct.indexOf("javascript") >= 0 ) {
-                               jQuery.globalEval( data );
-                       }
-
-                       // Get the JavaScript object, if JSON is used.
-                       if ( type === "json" || !type && ct.indexOf("json") >= 0 ) {
-                               // Try to use the native JSON parser first
-                               try {
-                                       data = JSON.parse( data );
-
-                               } catch(e) {
-                                       data = (new Function("return " + data))();
-                               }
-                       }
-               }
+               return jQuery.xhr().open( s ? s.type : undefined , url ).send( undefined , s );
 
-               return data;
        },
 
        // Serialize an array of form elements or a set of
        // key/values into a query string
        param: function( a, traditional ) {
-               
-               var s = [];
-               
+               var s = [],
+                       add = function( key, value ) {
+                               // If value is a function, invoke it and return its value
+                               value = jQuery.isFunction(value) ? value() : value;
+                               s[ s.length ] = encodeURIComponent(key) + "=" + encodeURIComponent(value);
+                       };
+
                // Set traditional to true for jQuery <= 1.3.2 behavior.
                if ( traditional === undefined ) {
                        traditional = jQuery.ajaxSettings.traditional;
                }
-               
-               function add( key, value ) {
-                       // If value is a function, invoke it and return its value
-                       value = jQuery.isFunction(value) ? value() : value;
-                       s[ s.length ] = encodeURIComponent(key) + "=" + encodeURIComponent(value);
-               }
-               
+
                // If an array was passed in, assume that it is an array of form elements.
                if ( jQuery.isArray(a) || a.jquery ) {
                        // Serialize the form elements
                        jQuery.each( a, function() {
                                add( this.name, this.value );
                        });
-                       
+
                } else {
                        // If traditional, encode the "old" way (the way 1.3.2 or older
                        // did it), otherwise encode params recursively.
-                       jQuery.each( a, function buildParams( prefix, obj ) {
-                               
-                               if ( jQuery.isArray(obj) ) {
-                                       // Serialize array item.
-                                       jQuery.each( obj, function( i, v ) {
-                                               if ( traditional ) {
-                                                       // Treat each array item as a scalar.
-                                                       add( prefix, v );
-                                               } else {
-                                                       // If array item is non-scalar (array or object), encode its
-                                                       // numeric index to resolve deserialization ambiguity issues.
-                                                       // Note that rack (as of 1.0.0) can't currently deserialize
-                                                       // nested arrays properly, and attempting to do so may cause
-                                                       // a server error. Possible fixes are to modify rack's
-                                                       // deserialization algorithm or to provide an option or flag
-                                                       // to force array serialization to be shallow.
-                                                       buildParams( prefix + "[" + ( typeof v === "object" || jQuery.isArray(v) ? i : "" ) + "]", v );
-                                               }
-                                       });
-                                       
-                               } else if ( !traditional && typeof obj === "object" ) {
-                                       // Serialize object item.
-                                       jQuery.each( obj, function( k, v ) {
-                                               buildParams( prefix + "[" + k + "]", v );
-                                       });
-                                       
-                               } else {
-                                       // Serialize scalar item.
-                                       add( prefix, obj );
-                               }
-                       });
+                       for ( var prefix in a ) {
+                               buildParams( prefix, a[prefix], traditional, add );
+                       }
                }
-               
+
                // Return the resulting serialization
                return s.join("&").replace(r20, "+");
        }
+});
+
+function buildParams( prefix, obj, traditional, add ) {
+       if ( jQuery.isArray(obj) && obj.length ) {
+               // Serialize array item.
+               jQuery.each( obj, function( i, v ) {
+                       if ( traditional || rbracket.test( prefix ) ) {
+                               // Treat each array item as a scalar.
+                               add( prefix, v );
+
+                       } else {
+                               // If array item is non-scalar (array or object), encode its
+                               // numeric index to resolve deserialization ambiguity issues.
+                               // Note that rack (as of 1.0.0) can't currently deserialize
+                               // nested arrays properly, and attempting to do so may cause
+                               // a server error. Possible fixes are to modify rack's
+                               // deserialization algorithm or to provide an option or flag
+                               // to force array serialization to be shallow.
+                               buildParams( prefix + "[" + ( typeof v === "object" || jQuery.isArray(v) ? i : "" ) + "]", v, traditional, add );
+                       }
+               });
+
+       } else if ( !traditional && obj != null && typeof obj === "object" ) {
+               // If we see an array here, it is empty and should be treated as an empty
+               // object
+               if ( jQuery.isArray( obj ) || jQuery.isEmptyObject( obj ) ) {
+                       add( prefix, "" );
+
+               // Serialize object item.
+               } else {
+                       jQuery.each( obj, function( k, v ) {
+                               buildParams( prefix + "[" + k + "]", v, traditional, add );
+                       });
+               }
+
+       } else {
+               // Serialize scalar item.
+               add( prefix, obj );
+       }
+}
+
+// This is still on the jQuery object... for now
+// Want to move this to jQuery.ajax some day
+jQuery.extend({
+
+       // Counter for holding the number of active queries
+       active: 0,
+
+       // Last-Modified header cache for next request
+       lastModified: {},
+       etag: {}
 
 });
+
+/*
+ * Create the request object; Microsoft failed to properly
+ * implement the XMLHttpRequest in IE7 (can't request local files),
+ * so we use the ActiveXObject when it is available
+ * Additionally XMLHttpRequest can be disabled in IE7/IE8 so
+ * we need a fallback.
+ */
+if ( window.ActiveXObject ) {
+       jQuery.ajaxSettings.xhr = function() {
+       if ( window.location.protocol !== "file:" ) {
+               try {
+                       return new window.XMLHttpRequest();
+               } catch( xhrError ) {}
+       }
+
+       try {
+               return new window.ActiveXObject("Microsoft.XMLHTTP");
+       } catch( activeError ) {}
+       };
+}
+
+var testXHR = jQuery.ajaxSettings.xhr();
+
+// Does this browser support XHR requests?
+jQuery.support.ajax = !!testXHR;
+
+// Does this browser support crossDomain XHR requests
+jQuery.support.cors = testXHR && "withCredentials" in testXHR;
+
+})( jQuery );