jquery-1.2.js

里面包括了一些javascript的常用用法

				result = result.concat( val );
			}
		}

		return result;
	}
});

var userAgent = navigator.userAgent.toLowerCase();

// Figure out what browser is being used
jQuery.browser = {
	version: (userAgent.match(/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/) || [])[1],
	safari: /webkit/.test(userAgent),
	opera: /opera/.test(userAgent),
	msie: /msie/.test(userAgent) && !/opera/.test(userAgent),
	mozilla: /mozilla/.test(userAgent) && !/(compatible|webkit)/.test(userAgent)
};

var styleFloat = jQuery.browser.msie ? "styleFloat" : "cssFloat";
	
jQuery.extend({
	// Check to see if the W3C box model is being used
	boxModel: !jQuery.browser.msie || document.compatMode == "CSS1Compat",
	
	styleFloat: jQuery.browser.msie ? "styleFloat" : "cssFloat",
	
	props: {
		"for": "htmlFor",
		"class": "className",
		"float": styleFloat,
		cssFloat: styleFloat,
		styleFloat: styleFloat,
		innerHTML: "innerHTML",
		className: "className",
		value: "value",
		disabled: "disabled",
		checked: "checked",
		readonly: "readOnly",
		selected: "selected",
		maxlength: "maxLength"
	}
});

jQuery.each({
	parent: "a.parentNode",
	parents: "jQuery.dir(a,'parentNode')",
	next: "jQuery.nth(a,2,'nextSibling')",
	prev: "jQuery.nth(a,2,'previousSibling')",
	nextAll: "jQuery.dir(a,'nextSibling')",
	prevAll: "jQuery.dir(a,'previousSibling')",
	siblings: "jQuery.sibling(a.parentNode.firstChild,a)",
	children: "jQuery.sibling(a.firstChild)",
	contents: "jQuery.nodeName(a,'iframe')?a.contentDocument||a.contentWindow.document:jQuery.makeArray(a.childNodes)"
}, function(i,n){
	jQuery.fn[ i ] = function(a) {
		var ret = jQuery.map(this,n);
		if ( a && typeof a == "string" )
			ret = jQuery.multiFilter(a,ret);
		return this.pushStack( jQuery.unique(ret) );
	};
});

jQuery.each({
	appendTo: "append",
	prependTo: "prepend",
	insertBefore: "before",
	insertAfter: "after",
	replaceAll: "replaceWith"
}, function(i,n){
	jQuery.fn[ i ] = function(){
		var a = arguments;
		return this.each(function(){
			for ( var j = 0, al = a.length; j < al; j++ )
				jQuery(a[j])[n]( this );
		});
	};
});

jQuery.each( {
	removeAttr: function( key ) {
		jQuery.attr( this, key, "" );
		this.removeAttribute( key );
	},
	addClass: function(c){
		jQuery.className.add(this,c);
	},
	removeClass: function(c){
		jQuery.className.remove(this,c);
	},
	toggleClass: function( c ){
		jQuery.className[ jQuery.className.has(this,c) ? "remove" : "add" ](this, c);
	},
	remove: function(a){
		if ( !a || jQuery.filter( a, [this] ).r.length ) {
			jQuery.removeData( this );
			this.parentNode.removeChild( this );
		}
	},
	empty: function() {
		// Clean up the cache
		jQuery("*", this).each(function(){ jQuery.removeData(this); });

		while ( this.firstChild )
			this.removeChild( this.firstChild );
	}
}, function(i,n){
	jQuery.fn[ i ] = function() {
		return this.each( n, arguments );
	};
});

jQuery.each( [ "Height", "Width" ], function(i,name){
	var n = name.toLowerCase();
	
	jQuery.fn[ n ] = function(h) {
		return this[0] == window ?
			jQuery.browser.safari && self["inner" + name] ||
			jQuery.boxModel && Math.max(document.documentElement["client" + name], document.body["client" + name]) ||
			document.body["client" + name] :
		
			this[0] == document ?
				Math.max( document.body["scroll" + name], document.body["offset" + name] ) :
        
				h == undefined ?
					( this.length ? jQuery.css( this[0], n ) : null ) :
					this.css( n, h.constructor == String ? h : h + "px" );
	};
});

var chars = jQuery.browser.safari && parseInt(jQuery.browser.version) < 417 ?
		"(?:[\\w*_-]|\\\\.)" :
		"(?:[\\w\u0128-\uFFFF*_-]|\\\\.)",
	quickChild = new RegExp("^>\\s*(" + chars + "+)"),
	quickID = new RegExp("^(" + chars + "+)(#)(" + chars + "+)"),
	quickClass = new RegExp("^([#.]?)(" + chars + "*)");

jQuery.extend({
	expr: {
		"": "m[2]=='*'||jQuery.nodeName(a,m[2])",
		"#": "a.getAttribute('id')==m[2]",
		":": {
			// Position Checks
			lt: "i<m[3]-0",
			gt: "i>m[3]-0",
			nth: "m[3]-0==i",
			eq: "m[3]-0==i",
			first: "i==0",
			last: "i==r.length-1",
			even: "i%2==0",
			odd: "i%2",

			// Child Checks
			"first-child": "a.parentNode.getElementsByTagName('*')[0]==a",
			"last-child": "jQuery.nth(a.parentNode.lastChild,1,'previousSibling')==a",
			"only-child": "!jQuery.nth(a.parentNode.lastChild,2,'previousSibling')",

			// Parent Checks
			parent: "a.firstChild",
			empty: "!a.firstChild",

			// Text Check
			contains: "(a.textContent||a.innerText||'').indexOf(m[3])>=0",

			// Visibility
			visible: '"hidden"!=a.type&&jQuery.css(a,"display")!="none"&&jQuery.css(a,"visibility")!="hidden"',
			hidden: '"hidden"==a.type||jQuery.css(a,"display")=="none"||jQuery.css(a,"visibility")=="hidden"',

			// Form attributes
			enabled: "!a.disabled",
			disabled: "a.disabled",
			checked: "a.checked",
			selected: "a.selected||jQuery.attr(a,'selected')",

			// Form elements
			text: "'text'==a.type",
			radio: "'radio'==a.type",
			checkbox: "'checkbox'==a.type",
			file: "'file'==a.type",
			password: "'password'==a.type",
			submit: "'submit'==a.type",
			image: "'image'==a.type",
			reset: "'reset'==a.type",
			button: '"button"==a.type||jQuery.nodeName(a,"button")',
			input: "/input|select|textarea|button/i.test(a.nodeName)",

			// :has()
			has: "jQuery.find(m[3],a).length",

			// :header
			header: "/h\\d/i.test(a.nodeName)",

			// :animated
			animated: "jQuery.grep(jQuery.timers,function(fn){return a==fn.elem;}).length"
		}
	},
	
	// The regular expressions that power the parsing engine
	parse: [
		// Match: [@value='test'], [@foo]
		/^(\[) *@?([\w-]+) *([!*$^~=]*) *('?"?)(.*?)\4 *\]/,

		// Match: :contains('foo')
		/^(:)([\w-]+)\("?'?(.*?(\(.*?\))?[^(]*?)"?'?\)/,

		// Match: :even, :last-chlid, #id, .class
		new RegExp("^([:.#]*)(" + chars + "+)")
	],

	multiFilter: function( expr, elems, not ) {
		var old, cur = [];

		while ( expr && expr != old ) {
			old = expr;
			var f = jQuery.filter( expr, elems, not );
			expr = f.t.replace(/^\s*,\s*/, "" );
			cur = not ? elems = f.r : jQuery.merge( cur, f.r );
		}

		return cur;
	},

	find: function( t, context ) {
		// Quickly handle non-string expressions
		if ( typeof t != "string" )
			return [ t ];

		// Make sure that the context is a DOM Element
		if ( context && !context.nodeType )
			context = null;

		// Set the correct context (if none is provided)
		context = context || document;

		// Initialize the search
		var ret = [context], done = [], last;

		// Continue while a selector expression exists, and while
		// we're no longer looping upon ourselves
		while ( t && last != t ) {
			var r = [];
			last = t;

			t = jQuery.trim(t);

			var foundToken = false;

			// An attempt at speeding up child selectors that
			// point to a specific element tag
			var re = quickChild;
			var m = re.exec(t);

			if ( m ) {
				var nodeName = m[1].toUpperCase();

				// Perform our own iteration and filter
				for ( var i = 0; ret[i]; i++ )
					for ( var c = ret[i].firstChild; c; c = c.nextSibling )
						if ( c.nodeType == 1 && (nodeName == "*" || c.nodeName.toUpperCase() == nodeName.toUpperCase()) )
							r.push( c );

				ret = r;
				t = t.replace( re, "" );
				if ( t.indexOf(" ") == 0 ) continue;
				foundToken = true;
			} else {
				re = /^([>+~])\s*(\w*)/i;

				if ( (m = re.exec(t)) != null ) {
					r = [];

					var nodeName = m[2], merge = {};
					m = m[1];

					for ( var j = 0, rl = ret.length; j < rl; j++ ) {
						var n = m == "~" || m == "+" ? ret[j].nextSibling : ret[j].firstChild;
						for ( ; n; n = n.nextSibling )
							if ( n.nodeType == 1 ) {
								var id = jQuery.data(n);

								if ( m == "~" && merge[id] ) break;
								
								if (!nodeName || n.nodeName.toUpperCase() == nodeName.toUpperCase() ) {
									if ( m == "~" ) merge[id] = true;
									r.push( n );
								}
								
								if ( m == "+" ) break;
							}
					}

					ret = r;

					// And remove the token
					t = jQuery.trim( t.replace( re, "" ) );
					foundToken = true;
				}
			}

			// See if there's still an expression, and that we haven't already
			// matched a token
			if ( t && !foundToken ) {
				// Handle multiple expressions
				if ( !t.indexOf(",") ) {
					// Clean the result set
					if ( context == ret[0] ) ret.shift();

					// Merge the result sets
					done = jQuery.merge( done, ret );

					// Reset the context
					r = ret = [context];

					// Touch up the selector string
					t = " " + t.substr(1,t.length);

				} else {
					// Optimize for the case nodeName#idName
					var re2 = quickID;
					var m = re2.exec(t);
					
					// Re-organize the results, so that they're consistent
					if ( m ) {
					   m = [ 0, m[2], m[3], m[1] ];

					} else {
						// Otherwise, do a traditional filter check for
						// ID, class, and element selectors
						re2 = quickClass;
						m = re2.exec(t);
					}

					m[2] = m[2].replace(/\\/g, "");

					var elem = ret[ret.length-1];

					// Try to do a global search by ID, where we can
					if ( m[1] == "#" && elem && elem.getElementById && !jQuery.isXMLDoc(elem) ) {
						// Optimization for HTML document case
						var oid = elem.getElementById(m[2]);
						
						// Do a quick check for the existence of the actual ID attribute
						// to avoid selecting by the name attribute in IE
						// also check to insure id is a string to avoid selecting an element with the name of 'id' inside a form
						if ( (jQuery.browser.msie||jQuery.browser.opera) && oid && typeof oid.id == "string" && oid.id != m[2] )
							oid = jQuery('[@id="'+m[2]+'"]', elem)[0];

						// Do a quick check for node name (where applicable) so
						// that div#foo searches will be really fast
						ret = r = oid && (!m[3] || jQuery.nodeName(oid, m[3])) ? [oid] : [];
					} else {
						// We need to find all descendant elements
						for ( var i = 0; ret[i]; i++ ) {
							// Grab the tag name being searched for
							var tag = m[1] == "#" && m[3] ? m[3] : m[1] != "" || m[0] == "" ? "*" : m[2];

							// Handle IE7 being really dumb about <object>s
							if ( tag == "*" && ret[i].nodeName.toLowerCase() == "object" )
								tag = "param";

							r = jQuery.merge( r, ret[i].getElementsByTagName( tag ));
						}

						// It's faster to filter by class and be done with it
						if ( m[1] == "." )
							r = jQuery.classFilter( r, m[2] );

						// Same with ID filtering
						if ( m[1] == "#" ) {
							var tmp = [];

							// Try to find the element with the ID
							for ( var i = 0; r[i]; i++ )
								if ( r[i].getAttribute("id") == m[2] ) {
									tmp = [ r[i] ];
									break;
								}

							r = tmp;
						}

						ret = r;
					}

					t = t.replace( re2, "" );
				}

			}

			// If a selector string still exists
			if ( t ) {
				// Attempt to filter it
				var val = jQuery.filter(t,r);
				ret = r = val.r;
				t = jQuery.trim(val.t);
			}
		}

		// An error occurred with the selector;
		// just return an empty set instead
		if ( t )
			ret = [];

		// Remove the root context
		if ( ret && context == ret[0] )
			ret.shift();

		// And combine the results
		done = jQuery.merge( done, ret );

		return done;
	},

	classFilter: function(r,m,not){
		m = " " + m + " ";
		var tmp = [];
		for ( var i = 0; r[i]; i++ ) {
			var pass = (" " + r[i].className + " ").indexOf( m ) >= 0;
			if ( !not && pass || not && !pass )
				tmp.push( r[i] );
		}
		return tmp;
	},

	filter: function(t,r,not) {
		var last;

		// Look for common filter expressions
		while ( t  && t != last ) {
			last = t;

			var p = jQuery.parse, m;

			for ( var i = 0; p[i]; i++ ) {
				m = p[i].exec( t );

				if ( m ) {
					// Remove what we just matched
					t = t.substring( m[0].length );

					m[2] = m[2].replace(/\\/g, "");
					break;
				}
			}

			if ( !m )
				break;

			// :not() is a special case that can be optimized by
			// keeping it out of the expression list
			if ( m[1] == ":" && m[2] == "not" )
				r = jQuery.filter(m[3], r, true).r;

			// We can get a big speed boost by filtering by class here
			else if ( m[1] == "." )
				r = jQuery.classFilter(r, m[2], not);

			else if ( m[1] == "[" ) {
				var tmp = [], type = m[3];
				
				for ( var i = 0, rl = r.length; i < rl; i++ ) {
					var a = r[i], z = a[ jQuery.props[m[2]] || m[2] ];
					
					if ( z == null || /href|src|selected/.test(m[2]) )
						z = jQuery.attr(a,m[2]) || '';

					if ( (type == "" && !!z ||
						 type == "=" && z == m[5] ||
						 type == "!=" && z != m[5] ||
						 type == "^=" && z && !z.indexOf(m[5]) ||
						 type == "$=" && z.substr(z.length - m[5].length) == m[5] ||
						 (type == "*=" || type == "~=") && z.indexOf(m[5]) >= 0) ^ not )
							tmp.push( a );
				}
				
				r = tmp;

			// We can get a speed boost by handling nth-child here
			} else if ( m[1] == ":" && m[2] == "nth-child" ) {
				var merge = {}, tmp = [],
					test = /(\d*)n\+?(\d*)/.exec(
						m[3] == "even" && "2n" || m[3] == "odd" && "2n+1" ||
						!/\D/.test(m[3]) && "n+" + m[3] || m[3]),
					first = (test[1] || 1) - 0, last = test[2] - 0;

				for ( var i = 0, rl = r.length; i < rl; i++ ) {
					var node = r[i], parentNode = node.parentNode, id = jQuery.data(parentNode);

					if ( !merge[id] ) {