X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fajax.js;h=61b9c438efa1185dfb8f22efd79379afe7aa1efd;hb=2a0c7d702b83a6b2e40eb79a5d6ea94d74f3090d;hp=a9f47ddb27300831c3c99f23d1d8f6c1785b7a74;hpb=6a722e251dedd5f01ac0c46e330a368be7bb760b;p=jquery.git diff --git a/src/ajax.js b/src/ajax.js index a9f47dd..61b9c43 100644 --- a/src/ajax.js +++ b/src/ajax.js @@ -1,20 +1,29 @@ -var jsc = now(), - rscript = //g, - rselectTextarea = /select|textarea/i, - rinput = /text|hidden|password|search/i, - jsre = /=\?(&|$)/, +(function( jQuery ) { + +var jsc = jQuery.now(), + rscript = /)<[^<]*)*<\/script>/gi, + rselectTextarea = /^(?:select|textarea)/i, + rinput = /^(?:color|date|datetime|email|hidden|month|number|password|range|search|tel|text|time|url|week)$/i, + rnoContent = /^(?:GET|HEAD)$/, + rbracket = /\[\]$/, + jsre = /\=\?(&|$)/, rquery = /\?/, - rts = /(\?|&)_=.*?(&|$)/, + rts = /([?&])_=[^&]*/, rurl = /^(\w+:)?\/\/([^\/?#]+)/, - r20 = /%20/g; + r20 = /%20/g, + rhash = /#.*$/, -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 ) { + return this; } var off = url.indexOf(" "); @@ -36,25 +45,26 @@ jQuery.fn.extend({ // Otherwise, build a param string } else if ( typeof params === "object" ) { - params = jQuery.param( params ); + params = jQuery.param( params, jQuery.ajaxSettings.traditional ); type = "POST"; } } + var self = this; + // Request the remote document jQuery.ajax({ url: url, type: type, dataType: "html", data: params, - context:this, - complete: function(res, status){ + 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("
") + jQuery("
") // inject the contents of the document in, removing the scripts // to avoid any 'Permission Denied' errors in IE .append(res.responseText.replace(rscript, "")) @@ -67,7 +77,7 @@ jQuery.fn.extend({ } if ( callback ) { - this.each( callback, [res.responseText, status, res] ); + self.each( callback, [res.responseText, status, res] ); } } }); @@ -78,38 +88,38 @@ 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 ) { // shift arguments if data argument was omited if ( jQuery.isFunction( data ) ) { @@ -168,14 +178,11 @@ jQuery.extend({ data: null, username: null, password: null, + traditional: false, */ - // Create the request object; Microsoft failed to properly - // implement the XMLHttpRequest in IE7, so we use the ActiveXObject when it is available // This function can be overriden by calling jQuery.ajaxSetup - xhr: function(){ - return window.ActiveXObject ? - new ActiveXObject("Microsoft.XMLHTTP") : - new XMLHttpRequest(); + xhr: function() { + return new window.XMLHttpRequest(); }, accepts: { xml: "application/xml, text/xml", @@ -187,22 +194,21 @@ jQuery.extend({ } }, - // Last-Modified header cache for next request - lastModified: {}, - etag: {}, + ajax: function( origSettings ) { + var s = jQuery.extend(true, {}, jQuery.ajaxSettings, origSettings), + jsonp, status, data, type = s.type.toUpperCase(), noContent = rnoContent.test(type); - ajax: function( s ) { - // Extend the settings, but re-extend 's' so that it can be - // checked again later (in the test suite, specifically) - s = jQuery.extend(true, {}, jQuery.ajaxSettings, s); - - var jsonp, status, data, - callbackContext = s.context || window, - type = s.type.toUpperCase(); + // toString fixes people passing a window.location or + // document.location to $.ajax, which worked in 1.4.2 and + // earlier (bug #7531). It should be removed in 1.5. + s.url = s.url.toString().replace( rhash, "" ); + + // Use original (not extended) context object if it was provided + s.context = origSettings && origSettings.context != null ? origSettings.context : s; // convert data if not already a string if ( s.data && s.processData && typeof s.data !== "string" ) { - s.data = jQuery.param(s.data); + s.data = jQuery.param( s.data, s.traditional ); } // Handle JSONP Parameter Callbacks @@ -219,7 +225,7 @@ jQuery.extend({ // Build temporary JSONP function if ( s.dataType === "json" && (s.data && jsre.test(s.data) || jsre.test(s.url)) ) { - jsonp = "jsonp" + jsc++; + jsonp = s.jsonpCallback || ("jsonp" + jsc++); // Replace the =? sequence both in the query string and the data if ( s.data ) { @@ -233,13 +239,25 @@ jQuery.extend({ s.dataType = "script"; // Handle JSONP-style loading - window[ jsonp ] = function(tmp){ + var customJsonp = window[ jsonp ]; + + window[ jsonp ] = function( tmp ) { + if ( jQuery.isFunction( customJsonp ) ) { + customJsonp( tmp ); + + } else { + // Garbage collect + window[ jsonp ] = undefined; + + try { + delete window[ jsonp ]; + } catch( jsonpError ) {} + } + data = tmp; - success(); - complete(); - // Garbage collect - window[ jsonp ] = undefined; - try{ delete window[ jsonp ]; } catch(e){} + jQuery.handleSuccess( s, xhr, status, data ); + jQuery.handleComplete( s, xhr, status, data ); + if ( head ) { head.removeChild( script ); } @@ -250,52 +268,51 @@ jQuery.extend({ s.cache = false; } - if ( s.cache === false && type === "GET" ) { - var ts = now(); + if ( s.cache === false && noContent ) { + var ts = jQuery.now(); // try replacing _= if it is there - var ret = s.url.replace(rts, "$1_=" + ts + "$2"); + var ret = s.url.replace(rts, "$1_=" + ts); // 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" ) { + // If data is available, append data to url for GET/HEAD requests + if ( s.data && noContent ) { s.url += (rquery.test(s.url) ? "&" : "?") + s.data; } // Watch for a new set of requests - if ( s.global && ! jQuery.active++ ) { + if ( s.global && jQuery.active++ === 0 ) { jQuery.event.trigger( "ajaxStart" ); } // Matches an absolute URL, and saves the domain - var parts = rurl.exec( s.url ); + var parts = rurl.exec( s.url ), + remote = parts && (parts[1] && parts[1].toLowerCase() !== location.protocol || parts[2].toLowerCase() !== 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" && parts - && ( parts[1] && parts[1] !== location.protocol || parts[2] !== location.host )) { - + 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; } + script.src = s.url; // Handle Script loading if ( !jsonp ) { var done = false; // Attach handlers for all browsers - script.onload = script.onreadystatechange = function(){ + script.onload = script.onreadystatechange = function() { if ( !done && (!this.readyState || this.readyState === "loaded" || this.readyState === "complete") ) { done = true; - success(); - complete(); + jQuery.handleSuccess( s, xhr, status, data ); + jQuery.handleComplete( s, xhr, status, data ); // Handle memory leak in IE script.onload = script.onreadystatechange = null; @@ -319,6 +336,10 @@ jQuery.extend({ // 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 ) { @@ -329,35 +350,38 @@ jQuery.extend({ // 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 ) { + // Set content-type if data specified and content-body is valid for this type + if ( (s.data != null && !noContent) || (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]); - } + // 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]); + } - if ( jQuery.etag[s.url] ) { - xhr.setRequestHeader("If-None-Match", jQuery.etag[s.url]); - } + if ( jQuery.etag[s.url] ) { + xhr.setRequestHeader("If-None-Match", jQuery.etag[s.url]); } + } // Set header so the called script knows that it's an XMLHttpRequest - xhr.setRequestHeader("X-Requested-With", "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[ s.dataType ] + ", */*; q=0.01" : s.accepts._default ); - } catch(e){} + } catch( headerError ) {} // Allow custom headers/mimetypes and early abort - if ( s.beforeSend && s.beforeSend.call(callbackContext, xhr, s) === false ) { + if ( s.beforeSend && s.beforeSend.call(s.context, xhr, s) === false ) { // Handle the global AJAX counter - if ( s.global && ! --jQuery.active ) { + if ( s.global && jQuery.active-- === 1 ) { jQuery.event.trigger( "ajaxStop" ); } @@ -367,33 +391,28 @@ jQuery.extend({ } if ( s.global ) { - trigger("ajaxSend", [xhr, s]); + jQuery.triggerGlobal( s, "ajaxSend", [xhr, s] ); } // Wait for a response to come back - var onreadystatechange = function(isTimeout){ - // The request was aborted, clear the interval and decrement jQuery.active - if ( !xhr || xhr.readyState === 0 ) { - if ( ival ) { - // clear poll interval - clearInterval( ival ); - ival = null; - - // Handle the global AJAX counter - if ( s.global && ! --jQuery.active ) { - jQuery.event.trigger( "ajaxStop" ); - } + var onreadystatechange = xhr.onreadystatechange = function( isTimeout ) { + // The request was aborted + if ( !xhr || xhr.readyState === 0 || isTimeout === "abort" ) { + // Opera doesn't call onreadystatechange before this point + // so we simulate the call + if ( !requestDone ) { + jQuery.handleComplete( s, xhr, status, data ); + } + + requestDone = true; + if ( xhr ) { + xhr.onreadystatechange = jQuery.noop; } // 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; - - // clear poll interval - if (ival) { - clearInterval(ival); - ival = null; - } + xhr.onreadystatechange = jQuery.noop; status = isTimeout === "timeout" ? "timeout" : @@ -403,13 +422,16 @@ jQuery.extend({ "notmodified" : "success"; + var errMsg; + 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) { + } catch( parserError ) { status = "parsererror"; + errMsg = parserError; } } @@ -417,16 +439,18 @@ jQuery.extend({ if ( status === "success" || status === "notmodified" ) { // JSONP handles its own success callback if ( !jsonp ) { - success(); + jQuery.handleSuccess( s, xhr, status, data ); } } else { - jQuery.handleError(s, xhr, status); + jQuery.handleError( s, xhr, status, errMsg ); } // Fire the complete handlers - complete(); + if ( !jsonp ) { + jQuery.handleComplete( s, xhr, status, data ); + } - if ( isTimeout ) { + if ( isTimeout === "timeout" ) { xhr.abort(); } @@ -437,28 +461,41 @@ jQuery.extend({ } }; - if ( s.async ) { - // don't attach the handler to the request, just poll it instead - var ival = setInterval(onreadystatechange, 13); + // Override the abort handler, if we can (IE 6 doesn't allow it, but that's OK) + // Opera doesn't fire onreadystatechange at all on abort + try { + var oldAbort = xhr.abort; + xhr.abort = function() { + if ( xhr ) { + // oldAbort has no call property in IE7 so + // just do it this way, which works in all + // browsers + Function.prototype.call.call( oldAbort, xhr ); + } - // Timeout checker - if ( s.timeout > 0 ) { - setTimeout(function(){ - // Check to see if the request is still happening - if ( xhr && !requestDone ) { - onreadystatechange( "timeout" ); - } - }, s.timeout); - } + onreadystatechange( "abort" ); + }; + } catch( abortError ) {} + + // Timeout checker + if ( s.async && s.timeout > 0 ) { + setTimeout(function() { + // Check to see if the request is still happening + if ( xhr && !requestDone ) { + onreadystatechange( "timeout" ); + } + }, s.timeout); } // Send the data try { - xhr.send( type === "POST" || type === "PUT" ? s.data : null ); - } catch(e) { - jQuery.handleError(s, xhr, null, e); + xhr.send( noContent || s.data == null ? null : s.data ); + + } catch( sendError ) { + jQuery.handleError( s, xhr, null, sendError ); + // Fire the complete handlers - complete(); + jQuery.handleComplete( s, xhr, status, data ); } // firefox 1.5 doesn't fire statechange for sync requests @@ -466,67 +503,146 @@ jQuery.extend({ 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 ); - } + // return XMLHttpRequest to allow aborting the request etc. + return xhr; + }, - // Fire the global callback - if ( s.global ) { - trigger( "ajaxSuccess", [xhr, s] ); + // Serialize an array of form elements or a set of + // key/values into a query string + param: function( a, traditional ) { + 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; + } + + // 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. + for ( var prefix in a ) { + buildParams( prefix, a[prefix], traditional, add ); } } - function complete(){ - // Process result - if ( s.complete ) { - s.complete.call( callbackContext, xhr, status); - } + // Return the resulting serialization + return s.join("&").replace(r20, "+"); + } +}); - // The request was completed - if ( s.global ) { - trigger( "ajaxComplete", [xhr, s] ); +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 ( jQuery.isEmptyObject( obj ) ) { + add( prefix, "" ); - // 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); + // Serialize object item. + } else { + jQuery.each( obj, function( k, v ) { + buildParams( prefix + "[" + k + "]", v, traditional, add ); + }); } + + } else { + // Serialize scalar item. + add( prefix, obj ); + } +} - // return XMLHttpRequest to allow aborting the request etc. - return xhr; - }, +// 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: {}, 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 ); + s.error.call( s.context, xhr, status, e ); } // Fire the global callback if ( s.global ) { - (s.context ? jQuery(s.context) : jQuery.event).trigger( "ajaxError", [xhr, s, e] ); + jQuery.triggerGlobal( s, "ajaxError", [xhr, s, e] ); } }, - // Counter for holding the number of active queries - active: 0, + handleSuccess: function( s, xhr, status, data ) { + // If a local callback was specified, fire it and pass it the data + if ( s.success ) { + s.success.call( s.context, data, status, xhr ); + } + + // Fire the global callback + if ( s.global ) { + jQuery.triggerGlobal( s, "ajaxSuccess", [xhr, s] ); + } + }, + + handleComplete: function( s, xhr, status ) { + // Process result + if ( s.complete ) { + s.complete.call( s.context, xhr, status ); + } + + // The request was completed + if ( s.global ) { + jQuery.triggerGlobal( s, "ajaxComplete", [xhr, s] ); + } + + // Handle the global AJAX counter + if ( s.global && jQuery.active-- === 1 ) { + jQuery.event.trigger( "ajaxStop" ); + } + }, + + triggerGlobal: function( s, type, args ) { + (s.context && s.context.url == null ? jQuery(s.context) : jQuery.event).trigger(type, args); + }, // 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){} + xhr.status >= 200 && xhr.status < 300 || + xhr.status === 304 || xhr.status === 1223; + } catch(e) {} return false; }, @@ -544,17 +660,16 @@ jQuery.extend({ jQuery.etag[url] = etag; } - // Opera returns 0 when status is 304 - return xhr.status === 304 || xhr.status === 0; + return xhr.status === 304; }, httpData: function( xhr, type, s ) { - var ct = xhr.getResponseHeader("content-type"), - xml = type === "xml" || !type && ct && ct.indexOf("xml") >= 0, + 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"; + jQuery.error( "parsererror" ); } // Allow a pre-filtering function to sanitize the response @@ -565,77 +680,43 @@ jQuery.extend({ // The filter can actually parse the response if ( typeof data === "string" ) { + // Get the JavaScript object, if JSON is used. + if ( type === "json" || !type && ct.indexOf("json") >= 0 ) { + data = jQuery.parseJSON( data ); // If the type is "script", eval it in global context - if ( type === "script" ) { + } else if ( type === "script" || !type && ct.indexOf("javascript") >= 0 ) { jQuery.globalEval( data ); } - - // Get the JavaScript object, if JSON is used. - if ( type === "json" ) { - if ( typeof JSON === "object" && JSON.parse ) { - data = JSON.parse( data ); - } else { - data = (new Function("return " + data))(); - } - } } return data; - }, + } - // Serialize an array of form elements or a set of - // key/values into a query string - param: function( a ) { - var s = [], - param_traditional = jQuery.param.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); +}); + +/* + * 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) {} } - - // 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 - // Encode parameters from object, recursively. If - // jQuery.param.traditional is set, encode the "old" way - // (the way 1.3.2 or older did it) - jQuery.each( a, function buildParams( prefix, obj ) { - - if ( jQuery.isArray(obj) ) - jQuery.each( obj, function(i,v){ - // Due to rails' limited request param syntax, numeric array - // indices are not supported. To avoid serialization ambiguity - // issues, serialized arrays can only contain scalar values. php - // does not have this issue, but we should go with the lowest - // common denominator - add( prefix + ( param_traditional ? "" : "[]" ), v ); - }); - - else if ( typeof obj == "object" ) - if ( param_traditional ) - add( prefix, obj ); - - else - jQuery.each( obj, function(k,v){ - buildParams( prefix ? prefix + "[" + k + "]" : k, v ); - }); - - else - add( prefix, obj ); - - }); - // Return the resulting serialization - return s.join("&").replace(r20, "+"); - } + try { + return new window.ActiveXObject("Microsoft.XMLHTTP"); + } catch(activeError) {} + }; +} -}); +// Does this browser support XHR requests? +jQuery.support.ajax = !!jQuery.ajaxSettings.xhr(); + +})( jQuery );