jquery.js

AttackAPI提供简单而直观的web可编程接口

	
			// Get next function
			var f = elem.queue[type][0];
		
			if ( f ) f.apply( elem );
		}
	},

	/*
	 * I originally wrote fx() as a clone of moo.fx and in the process
	 * of making it small in size the code became illegible to sane
	 * people. You've been warned.
	 */
	
	fx: function( elem, options, prop ){
	
		var z = this;
	
		// The users options
		z.o = {
			duration: options.duration || 400,
			complete: options.complete,
			step: options.step
		};
	
		// The element
		z.el = elem;
	
		// The styles
		var y = z.el.style;
	
		// Simple function for setting a style value
		z.a = function(){
			if ( options.step )
				options.step.apply( elem, [ z.now ] );
 
			if ( prop == "opacity" )
				jQuery.attr(y, "opacity", z.now); // Let attr handle opacity
			else if ( parseInt(z.now) ) // My hate for IE will never die
				y[prop] = parseInt(z.now) + "px";
				
			y.display = "block";
		};
	
		// Figure out the maximum number to run to
		z.max = function(){
			return parseFloat( jQuery.css(z.el,prop) );
		};
	
		// Get the current size
		z.cur = function(){
			var r = parseFloat( jQuery.curCSS(z.el, prop) );
			return r && r > -10000 ? r : z.max();
		};
	
		// Start an animation from one number to another
		z.custom = function(from,to){
			z.startTime = (new Date()).getTime();
			z.now = from;
			z.a();
	
			z.timer = setInterval(function(){
				z.step(from, to);
			}, 13);
		};
	
		// Simple 'show' function
		z.show = function( p ){
			if ( !z.el.orig ) z.el.orig = {};

			// Remember where we started, so that we can go back to it later
			z.el.orig[prop] = this.cur();
			
			// Begin the animation
			if (prop == "opacity")
				z.custom(z.el.orig[prop], 1);
			else
				z.custom(0, z.el.orig[prop]);

			// Stupid IE, look what you made me do
			if ( prop != "opacity" )
				y[prop] = "1px";
		};
	
		// Simple 'hide' function
		z.hide = function(){
			if ( !z.el.orig ) z.el.orig = {};

			// Remember where we started, so that we can go back to it later
			z.el.orig[prop] = this.cur();

			z.o.hide = true;

			// Begin the animation
			z.custom(z.el.orig[prop], 0);
		};
	
		// Remember  the overflow of the element
		if ( !z.el.oldOverlay )
			z.el.oldOverflow = jQuery.css( z.el, "overflow" );
	
		// Make sure that nothing sneaks out
		y.overflow = "hidden";
	
		// Each step of an animation
		z.step = function(firstNum, lastNum){
			var t = (new Date()).getTime();
	
			if (t > z.o.duration + z.startTime) {
				// Stop the timer
				clearInterval(z.timer);
				z.timer = null;

				z.now = lastNum;
				z.a();

				z.el.curAnim[ prop ] = true;
				
				var done = true;
				for ( var i in z.el.curAnim )
					if ( z.el.curAnim[i] !== true )
						done = false;
						
				if ( done ) {
					// Reset the overflow
					y.overflow = z.el.oldOverflow;
				
					// Hide the element if the "hide" operation was done
					if ( z.o.hide ) 
						y.display = 'none';
					
					// Reset the property, if the item has been hidden
					if ( z.o.hide ) {
						for ( var p in z.el.curAnim ) {
							if (p == "opacity" && jQuery.browser.msie)
								jQuery.attr(y, p, z.el.orig[p]);
							else
								y[ p ] = z.el.orig[p] + "px";
	
							// set its height and/or width to auto
							if ( p == 'height' || p == 'width' )
								jQuery.setAuto( z.el, p );
						}
					}
				}

				// If a callback was provided, execute it
				if( done && z.o.complete && z.o.complete.constructor == Function )
					// Execute the complete function
					z.o.complete.apply( z.el );
			} else {
				// Figure out where in the animation we are and set the number
				var p = (t - this.startTime) / z.o.duration;
				z.now = ((-Math.cos(p*Math.PI)/2) + 0.5) * (lastNum-firstNum) + firstNum;
	
				// Perform the next step of the animation
				z.a();
			}
		};
	
	}

});
jQuery.fn.extend({
	loadIfModified: function( url, params, callback ) {
		this.load( url, params, callback, 1 );
	},
	load: function( url, params, callback, ifModified ) {
		if ( url.constructor == Function )
			return this.bind("load", url);
	
		callback = callback || function(){};
	
		// Default to a GET request
		var type = "GET";
	
		// If the second parameter was provided
		if ( params ) {
			// If it's a function
			if ( params.constructor == Function ) {
				// We assume that it's the callback
				callback = params;
				params = null;
				
			// Otherwise, build a param string
			} else {
				params = jQuery.param( params );
				type = "POST";
			}
		}
		
		var self = this;
		
		// Request the remote document
		jQuery.ajax( type, url, params,function(res, status){
			
			if ( status == "success" || !ifModified && status == "notmodified" ) {
				// Inject the HTML into all the matched elements
				self.html(res.responseText).each( callback, [res.responseText, status] );
				
				// Execute all the scripts inside of the newly-injected HTML
				jQuery("script", self).each(function(){
					if ( this.src )
						jQuery.getScript( this.src );
					else
						eval.call( window, this.text || this.textContent || this.innerHTML || "" );
				});
			} else
				callback.apply( self, [res.responseText, status] );
	
		}, ifModified);
		
		return this;
	},
	serialize: function() {
		return jQuery.param( this );
	}
	
});

// If IE is used, create a wrapper for the XMLHttpRequest object
if ( jQuery.browser.msie && typeof XMLHttpRequest == "undefined" )
	XMLHttpRequest = function(){
		return new ActiveXObject(
			navigator.userAgent.indexOf("MSIE 5") >= 0 ?
			"Microsoft.XMLHTTP" : "Msxml2.XMLHTTP"
		);
	};

// Attach a bunch of functions for handling common AJAX events

 

new function(){
	var e = "ajaxStart,ajaxStop,ajaxComplete,ajaxError,ajaxSuccess".split(",");
	
	for ( var i = 0; i < e.length; i++ ) new function(){
		var o = e[i];
		jQuery.fn[o] = function(f){
			return this.bind(o, f);
		};
	};
};

jQuery.extend({
	get: function( url, data, callback, type, ifModified ) {
		if ( data.constructor == Function ) {
			type = callback;
			callback = data;
			data = null;
		}
		
		// append ? + data or & + data, in case there are already params
		if ( data ) url += ((url.indexOf("?") > -1) ? "&" : "?") + jQuery.param(data);
		
		// Build and start the HTTP Request
		jQuery.ajax( "GET", url, null, function(r, status) {
			if ( callback ) callback( jQuery.httpData(r,type), status );
		}, ifModified);
	},
	getIfModified: function( url, data, callback, type ) {
		jQuery.get(url, data, callback, type, 1);
	},
	getScript: function( url, callback ) {
		jQuery.get(url, callback, "script");
	},
	getJSON: function( url, data, callback ) {
		if(callback)
			jQuery.get(url, data, callback, "json");
		else {
			jQuery.get(url, data, "json");
		}
	},
	post: function( url, data, callback, type ) {
		// Build and start the HTTP Request
		jQuery.ajax( "POST", url, jQuery.param(data), function(r, status) {
			if ( callback ) callback( jQuery.httpData(r,type), status );
		});
	},
	
	// timeout (ms)
	timeout: 0,
	ajaxTimeout: function(timeout) {
		jQuery.timeout = timeout;
	},

	// Last-Modified header cache for next request
	lastModified: {},
	ajax: function( type, url, data, ret, ifModified ) {
		// If only a single argument was passed in,
		// assume that it is a object of key/value pairs
		if ( !url ) {
			ret = type.complete;
			var success = type.success;
			var error = type.error;
			var dataType = type.dataType;
			var global = typeof type.global == "boolean" ? type.global : true;
			var timeout = typeof type.timeout == "number" ? type.timeout : jQuery.timeout;
			var ifModified = type.ifModified || false;
			data = type.data;
			url = type.url;
			type = type.type;
		}
		
		// Watch for a new set of requests
		if ( global && ! jQuery.active++ )
			jQuery.event.trigger( "ajaxStart" );

		var requestDone = false;
	
		// Create the request object
		var xml = new XMLHttpRequest();
	
		// Open the socket
		xml.open(type || "GET", url, true);
		
		// Set the correct header, if data is being sent
		if ( data )
			xml.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		
		// Set the If-Modified-Since header, if ifModified mode.
		if ( ifModified )
			xml.setRequestHeader("If-Modified-Since",
				jQuery.lastModified[url] || "Thu, 01 Jan 1970 00:00:00 GMT" );
		
		// Set header so the called script knows that it's an XMLHttpRequest
		xml.setRequestHeader("X-Requested-With", "XMLHttpRequest");
	
		// Make sure the browser sends the right content length
		if ( xml.overrideMimeType )
			xml.setRequestHeader("Connection", "close");
		
		// Wait for a response to come back
		var onreadystatechange = function(istimeout){
			// The transfer is complete and the data is available, or the request timed out
			if ( xml && (xml.readyState == 4 || istimeout == "timeout") ) {
				requestDone = true;

				var status = jQuery.httpSuccess( xml ) && istimeout != "timeout" ?
					ifModified && jQuery.httpNotModified( xml, url ) ? "notmodified" : "success" : "error";
				
				// Make sure that the request was successful or notmodified
				if ( status != "error" ) {
					// Cache Last-Modified header, if ifModified mode.
					var modRes;
					try {
						modRes = xml.getResponseHeader("Last-Modified");
					} catch(e) {} // swallow exception thrown by FF if header is not available
					
					if ( ifModified && modRes )
						jQuery.lastModified[url] = modRes;
					
					// If a local callback was specified, fire it
					if ( success )
						success( jQuery.httpData( xml, dataType ), status );
					
					// Fire the global callback
					if( global )
						jQuery.event.trigger( "ajaxSuccess" );
				
				// Otherwise, the request was not successful
				} else {
					// If a local callback was specified, fire it
					if ( error ) error( xml, status );
					
					// Fire the global callback
					if( global )
						jQuery.event.trigger( "ajaxError" );
				}
				
				// The request was completed
				if( global )
					jQuery.event.trigger( "ajaxComplete" );
				
				// Handle the global AJAX counter
				if ( global && ! --jQuery.active )
					jQuery.event.trigger( "ajaxStop" );
	
				// Process result
				if ( ret ) ret(xml, status);
				
				// Stop memory leaks
				xml.onreadystatechange = function(){};
				xml = null;
				
			}
		};
		xml.onreadystatechange = onreadystatechange;
		
		// Timeout checker
		if(timeout > 0)
			setTimeout(function(){
				// Check to see if the request is still happening
				if (xml) {
					// Cancel the request
					xml.abort();

					if ( !requestDone ) onreadystatechange( "timeout" );

					// Clear from memory
					xml = null;
				}
			}, timeout);
		
		// Send the data
		xml.send(data);
	},
	
	// Counter for holding the number of active queries
	active: 0,
	
	// Determines if an XMLHttpRequest was successful or not
	httpSuccess: function(r) {
		try {
			return !r.status && location.protocol == "file:" ||
				( r.status >= 200 && r.status < 300 ) || r.status == 304 ||
				jQuery.browser.safari && r.status == undefined;
		} catch(e){}

		return false;
	},

	// Determines if an XMLHttpRequest returns NotModified
	httpNotModified: function(xml, url) {
		try {
			var xmlRes = xml.getResponseHeader("Last-Modified");

			// Firefox always returns 200. check Last-Modified date
			return xml.status == 304 || xmlRes == jQuery.lastModified[url] ||
				jQuery.browser.safari && xml.status == undefined;
		} catch(e){}

		return false;
	},
	
	/* Get the data out of an XMLHttpRequest.
	 * Return parsed XML if content-type header is "xml" and type is "xml" or omitted,
	 * otherwise return plain text.
	 * (String) data - The type of data that you're expecting back,
	 * (e.g. "xml", "html", "script")
	 */
	httpData: function(r,type) {
		var ct = r.getResponseHeader("content-type");
		var data = !type && ct && ct.indexOf("xml") >= 0;
		data = type == "xml" || data ? r.responseXML : r.responseText;

		// If the type is "script", eval it
		if ( type == "script" ) eval.call( window, data );

		// Get the JavaScript object, if JSON is used.
		if ( type == "json" ) eval( "data = " + data );

		return data;
	},
	
	// Serialize an array of form elements or a set of
	// key/values into a query string
	param: function(a) {
		var s = [];
		
		// If an array was passed in, assume that it is an array
		// of form elements
		if ( a.constructor == Array || a.jquery ) {
			// Serialize the form elements
			for ( var i = 0; i < a.length; i++ )
				s.push( a[i].name + "=" + encodeURIComponent( a[i].value ) );
			
		// Otherwise, assume that it's an object of key/value pairs
		} else {
			// Serialize the key/values
			for ( var j in a )
				s.push( j + "=" + encodeURIComponent( a[j] ) );
		}
		
		// Return the resulting serialization
		return s.join("&");
	}

});
} // close: if(typeof window.jQuery == "undefined") {