X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fajax.js;h=1e0729f3fead843a4cdedfb6ba14c925b8071b75;hb=3e0cc815043c2425819743e907a0ce263a7ce164;hp=bffbeb607e66ddaba235968d7442314c2cb9f88f;hpb=e10e625bf4865cb8e9927e94d15afa37f6537a03;p=jquery.git diff --git a/src/ajax.js b/src/ajax.js index bffbeb6..08fbe6f 100644 --- a/src/ajax.js +++ b/src/ajax.js @@ -1,10 +1,24 @@ -jQuery.fn.extend({ - // Keep a copy of the old load - _load: jQuery.fn.load, +(function( jQuery ) { + +var rscript = /)<[^<]*)*<\/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 = /\?/, + r20 = /%20/g, + // 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(" "); if ( off >= 0 ) { @@ -16,7 +30,7 @@ jQuery.fn.extend({ var type = "GET"; // If the second parameter was provided - if ( params ) + if ( params ) { // If it's a function if ( jQuery.isFunction( params ) ) { // We assume that it's the callback @@ -24,10 +38,11 @@ jQuery.fn.extend({ params = null; // Otherwise, build a param string - } else if( typeof params === "object" ) { - params = jQuery.param( params ); + } else if ( typeof params === "object" ) { + params = jQuery.param( params, jQuery.ajaxSettings.traditional ); type = "POST"; } + } var self = this; @@ -37,45 +52,51 @@ jQuery.fn.extend({ type: type, dataType: "html", data: params, - complete: function(res, status){ + complete: function( res, status ) { // If successful, inject the HTML into all the matched elements - if ( status == "success" || status == "notmodified" ) + if ( status === "success" || status === "notmodified" ) { // See if a selector was specified 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(//g, "")) + .append(res.responseText.replace(rscript, "")) // Locate the specified elements .find(selector) : // If not, just inject the full result res.responseText ); + } - if( callback ) + if ( callback ) { self.each( callback, [res.responseText, status, res] ); + } } }); + return this; }, serialize: function() { return jQuery.param(this.serializeArray()); }, + serializeArray: function() { return this.map(function(){ return this.elements ? jQuery.makeArray(this.elements) : this; }) .filter(function(){ return this.name && !this.disabled && - (this.checked || /select|textarea/i.test(this.nodeName) || - /text|hidden|password|search/i.test(this.type)); + (this.checked || rselectTextarea.test(this.nodeName) || + rinput.test(this.type)); }) .map(function(i, elem){ var val = jQuery(this).val(); - return val == null ? null : + + return val == null ? + null : jQuery.isArray(val) ? jQuery.map( val, function(val, i){ return {name: elem.name, value: val}; @@ -86,31 +107,32 @@ jQuery.fn.extend({ }); // Attach a bunch of functions for handling common AJAX events -jQuery.each( "ajaxStart,ajaxStop,ajaxComplete,ajaxError,ajaxSuccess,ajaxSend".split(","), function(i,o){ +jQuery.each( "ajaxStart ajaxStop ajaxComplete ajaxError ajaxSuccess ajaxSend".split(" "), function(i,o){ jQuery.fn[o] = function(f){ return this.bind(o, f); }; }); -var jsc = now(); - -jQuery.extend({ - - get: function( url, data, callback, type ) { - // shift arguments if data argument was ommited +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; callback = data; data = null; } 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"); @@ -120,21 +142,6 @@ jQuery.extend({ return jQuery.get(url, data, callback, "json"); }, - post: function( url, data, callback, type ) { - if ( jQuery.isFunction( data ) ) { - callback = data; - data = {}; - } - - return jQuery.ajax({ - type: "POST", - url: url, - data: data, - success: callback, - dataType: type - }); - }, - ajaxSetup: function( settings ) { jQuery.extend( jQuery.ajaxSettings, settings ); }, @@ -149,392 +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, 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(); }, + 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: {}, - - 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, s, jQuery.extend(true, {}, jQuery.ajaxSettings, s)); - - var jsonp, jsre = /=\?(&|$)/g, status, data, - 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); - - // Handle JSONP Parameter Callbacks - if ( s.dataType == "jsonp" ) { - if ( type == "GET" ) { - if ( !s.url.match(jsre) ) - s.url += (s.url.match(/\?/) ? "&" : "?") + (s.jsonp || "callback") + "=?"; - } else if ( !s.data || !s.data.match(jsre) ) - s.data = (s.data ? s.data + "&" : "") + (s.jsonp || "callback") + "=?"; - s.dataType = "json"; - } + json: "application/json, text/javascript", + "*": "*/*" + }, - // Build temporary JSONP function - if ( s.dataType == "json" && (s.data && s.data.match(jsre) || s.url.match(jsre)) ) { - jsonp = "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 + "$1"); - - // We need to make sure - // that a JSONP style response is executed properly - s.dataType = "script"; - - // Handle JSONP-style loading - window[ jsonp ] = function(tmp){ - data = tmp; - success(); - complete(); - // Garbage collect - window[ jsonp ] = undefined; - try{ delete window[ jsonp ]; } catch(e){} - if ( head ) - head.removeChild( script ); - }; - } + autoDataType: { + xml: /xml/, + html: /html/, + json: /json/ + }, - if ( s.dataType == "script" && s.cache == null ) - s.cache = false; + // Prefilters + // 1) They are useful to introduce custom dataTypes (see transport/jsonp for an example) + // 2) These are called: + // * BEFORE asking for a transport + // * AFTER param serialization (s.data is a string if s.processData is true) + // 3) They MUST be order agnostic + prefilters: [], + + // Transports bindings + // 1) key is the dataType + // 2) the catchall symbol "*" can be used + // 3) selection will start with transport dataType and THEN go to "*" if needed + transports: { + }, - if ( s.cache === false && type == "GET" ) { - var ts = now(); - // try replacing _= if it is there - var ret = s.url.replace(/(\?|&)_=.*?(&|$)/, "$1_=" + ts + "$2"); - // if nothing was replaced, add timestamp to the end - s.url = ret + ((ret == s.url) ? (s.url.match(/\?/) ? "&" : "?") + "_=" + ts : ""); - } + // Checkers + // 1) key is dataType + // 2) they are called to control successful response + // 3) error throws is used as error data + dataCheckers: { - // If data is available, append data to url for get requests - if ( s.data && type == "GET" ) { - s.url += (s.url.match(/\?/) ? "&" : "?") + s.data; - } + // Check if data is a string + "text": function(data) { + if ( typeof data != "string" ) { + jQuery.error("typeerror"); + } + }, - // 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 = /^(\w+:)?\/\/([^\/?#]+)/.exec( s.url ); - - // 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 )){ - - var head = document.getElementsByTagName("head")[0]; - 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; - head.removeChild( script ); - } - }; + // Check if xml has been properly parsed + "xml": function(data) { + var documentElement = data ? data.documentElement : data; + if ( ! documentElement || ! documentElement.nodeName ) { + jQuery.error("typeerror"); + } + if ( documentElement.nodeName == "parsererror" ) { + jQuery.error("parsererror"); + } } + }, - // 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; + // 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); + } + return xml; + } } + }, - var requestDone = false; - - // Create the request object - var xhr = s.xhr(); - - // 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); + // Main method + ajax: function( url , s ) { - // 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 ) - xhr.setRequestHeader("Content-Type", s.contentType); - - // Set the If-Modified-Since header, if ifModified mode. - if ( s.ifModified ) - xhr.setRequestHeader("If-Modified-Since", - jQuery.lastModified[s.url] || "Thu, 01 Jan 1970 00:00:00 GMT" ); - - // Set header so the called script knows that it's an XMLHttpRequest - 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(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 ( arguments.length === 1 ) { + s = url; + url = s ? s.url : undefined; } - if ( s.global ) - jQuery.event.trigger("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.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" ); - } - // 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; - } - - 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" ) { - // Cache Last-Modified header, if ifModified mode. - var modRes; - try { - modRes = xhr.getResponseHeader("Last-Modified"); - } catch(e) {} // swallow exception thrown by FF if header is not available + return jQuery.xhr().open( s ? s.type : undefined , url ).send( undefined , s ); - if ( s.ifModified && modRes ) - jQuery.lastModified[s.url] = modRes; + }, - // JSONP handles its own success callback - if ( !jsonp ) - success(); - } else - jQuery.handleError(s, xhr, status); + // 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); + }; - // Fire the complete handlers - complete(); + // Set traditional to true for jQuery <= 1.3.2 behavior. + if ( traditional === undefined ) { + traditional = jQuery.ajaxSettings.traditional; + } - if ( isTimeout ) - xhr.abort(); + // 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 ); + }); - // Stop memory leaks - if ( s.async ) - xhr = null; + } 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 ); } - }; - - if ( s.async ) { - // don't attach the handler to the request, just poll it instead - var ival = setInterval(onreadystatechange, 13); - - // Timeout checker - if ( 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" ? s.data : null ); - } catch(e) { - jQuery.handleError(s, xhr, null, e); } - // 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( data, status ); - - // Fire the global callback - if ( s.global ) - jQuery.event.trigger( "ajaxSuccess", [xhr, s] ); - } + // Return the resulting serialization + return s.join("&").replace(r20, "+"); + } +}); - function complete(){ - // Process result - if ( s.complete ) - s.complete(xhr, status); +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 ); + } + }); - // The request was completed - if ( s.global ) - jQuery.event.trigger( "ajaxComplete", [xhr, s] ); + } 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, "" ); - // Handle the global AJAX counter - if ( s.global && ! --jQuery.active ) - jQuery.event.trigger( "ajaxStop" ); + // Serialize object item. + } else { + jQuery.each( obj, function( k, v ) { + buildParams( prefix + "[" + k + "]", v, traditional, add ); + }); } - // 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( xhr, status, e ); + } else { + // Serialize scalar item. + add( prefix, obj ); + } +} - // Fire the global callback - if ( s.global ) - jQuery.event.trigger( "ajaxError", [xhr, s, e] ); - }, +// 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, - // 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:" || - ( xhr.status >= 200 && xhr.status < 300 ) || xhr.status == 304 || xhr.status == 1223; - } catch(e){} - return false; - }, - - // Determines if an XMLHttpRequest returns NotModified - httpNotModified: function( xhr, url ) { - try { - var xhrRes = xhr.getResponseHeader("Last-Modified"); - - // Firefox always returns 200. check Last-Modified date - return xhr.status == 304 || xhrRes == jQuery.lastModified[url]; - } catch(e){} - return false; - }, - - httpData: function( xhr, type, s ) { - var ct = xhr.getResponseHeader("content-type"), - xml = type == "xml" || !type && ct && ct.indexOf("xml") >= 0, - data = xml ? xhr.responseXML : xhr.responseText; - - if ( xml && data.documentElement.tagName == "parsererror" ) - throw "parsererror"; - - // Allow a pre-filtering function to sanitize the response - // s != null is checked to keep backwards compatibility - if( s && s.dataFilter ) - data = s.dataFilter( data, type ); - - // The filter can actually parse the response - if( typeof data === "string" ){ - - // If the type is "script", eval it in global context - if ( type == "script" ) - jQuery.globalEval( data ); - - // Get the JavaScript object, if JSON is used. - if ( type == "json" ) - data = window["eval"]("(" + data + ")"); - } + // Last-Modified header cache for next request + lastModified: {}, + etag: {} - return data; - }, +}); - // Serialize an array of form elements or a set of - // key/values into a query string - param: function( a ) { - var s = [ ]; +/* + * 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 ) {} + } - function add( key, value ){ - s[ s.length ] = encodeURIComponent(key) + '=' + encodeURIComponent(value); - }; + try { + return new window.ActiveXObject("Microsoft.XMLHTTP"); + } catch( activeError ) {} + }; +} - // 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 ); - }); +var testXHR = jQuery.ajaxSettings.xhr(); - // Otherwise, assume that it's an object of key/value pairs - else - // Serialize the key/values - for ( var j in a ) - // If the value is an array then the key names need to be repeated - if ( jQuery.isArray(a[j]) ) - jQuery.each( a[j], function(){ - add( j, this ); - }); - else - add( j, jQuery.isFunction(a[j]) ? a[j]() : a[j] ); +// Does this browser support XHR requests? +jQuery.support.ajax = !!testXHR; - // Return the resulting serialization - return s.join("&").replace(/%20/g, "+"); - } +// Does this browser support crossDomain XHR requests +jQuery.support.cors = testXHR && "withCredentials" in testXHR; -}); +})( jQuery );