jquery-1.2.6.js

JavaScript 图片切换效果

						swap[ i ] = stack[ i ].style.display;
						stack[ i ].style.display = "block";
					}

				// Since we flip the display style, we have to handle that
				// one special, otherwise get the value
				ret = name == "display" && swap[ stack.length - 1 ] != null ?
					"none" :
					( computedStyle && computedStyle.getPropertyValue( name ) ) || "";

				// Finally, revert the display styles back
				for ( i = 0; i < swap.length; i++ )
					if ( swap[ i ] != null )
						stack[ i ].style.display = swap[ i ];
			}

			// We should always get a number back from opacity
			if ( name == "opacity" && ret == "" )
				ret = "1";

		} else if ( elem.currentStyle ) {
			var camelCase = name.replace(/\-(\w)/g, function(all, letter){
				return letter.toUpperCase();
			});

			ret = elem.currentStyle[ name ] || elem.currentStyle[ camelCase ];

			// From the awesome hack by Dean Edwards
			// http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291

			// If we're not dealing with a regular pixel number
			// but a number that has a weird ending, we need to convert it to pixels
			if ( !/^\d+(px)?$/i.test( ret ) && /^\d/.test( ret ) ) {
				// Remember the original values
				var left = style.left, rsLeft = elem.runtimeStyle.left;

				// Put in the new values to get a computed value out
				elem.runtimeStyle.left = elem.currentStyle.left;
				style.left = ret || 0;
				ret = style.pixelLeft + "px";

				// Revert the changed values
				style.left = left;
				elem.runtimeStyle.left = rsLeft;
			}
		}

		return ret;
	},

	clean: function( elems, context ) {
		var ret = [];
		context = context || document;
		// !context.createElement fails in IE with an error but returns typeof 'object'
		if (typeof context.createElement == 'undefined')
			context = context.ownerDocument || context[0] && context[0].ownerDocument || document;

		jQuery.each(elems, function(i, elem){
			if ( !elem )
				return;

			if ( elem.constructor == Number )
				elem += '';

			// Convert html string into DOM nodes
			if ( typeof elem == "string" ) {
				// Fix "XHTML"-style tags in all browsers
				elem = elem.replace(/(<(\w+)[^>]*?)\/>/g, function(all, front, tag){
					return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area|embed)$/i) ?
						all :
						front + "></" + tag + ">";
				});

				// Trim whitespace, otherwise indexOf won't work as expected
				var tags = jQuery.trim( elem ).toLowerCase(), div = context.createElement("div");

				var wrap =
					// option or optgroup
					!tags.indexOf("<opt") &&
					[ 1, "<select multiple='multiple'>", "</select>" ] ||

					!tags.indexOf("<leg") &&
					[ 1, "<fieldset>", "</fieldset>" ] ||

					tags.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
					[ 1, "<table>", "</table>" ] ||

					!tags.indexOf("<tr") &&
					[ 2, "<table><tbody>", "</tbody></table>" ] ||

				 	// <thead> matched above
					(!tags.indexOf("<td") || !tags.indexOf("<th")) &&
					[ 3, "<table><tbody><tr>", "</tr></tbody></table>" ] ||

					!tags.indexOf("<col") &&
					[ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ] ||

					// IE can't serialize <link> and <script> tags normally
					jQuery.browser.msie &&
					[ 1, "div<div>", "</div>" ] ||

					[ 0, "", "" ];

				// Go to html and back, then peel off extra wrappers
				div.innerHTML = wrap[1] + elem + wrap[2];

				// Move to the right depth
				while ( wrap[0]-- )
					div = div.lastChild;

				// Remove IE's autoinserted <tbody> from table fragments
				if ( jQuery.browser.msie ) {

					// String was a <table>, *may* have spurious <tbody>
					var tbody = !tags.indexOf("<table") && tags.indexOf("<tbody") < 0 ?
						div.firstChild && div.firstChild.childNodes :

						// String was a bare <thead> or <tfoot>
						wrap[1] == "<table>" && tags.indexOf("<tbody") < 0 ?
							div.childNodes :
							[];

					for ( var j = tbody.length - 1; j >= 0 ; --j )
						if ( jQuery.nodeName( tbody[ j ], "tbody" ) && !tbody[ j ].childNodes.length )
							tbody[ j ].parentNode.removeChild( tbody[ j ] );

					// IE completely kills leading whitespace when innerHTML is used
					if ( /^\s/.test( elem ) )
						div.insertBefore( context.createTextNode( elem.match(/^\s*/)[0] ), div.firstChild );

				}

				elem = jQuery.makeArray( div.childNodes );
			}

			if ( elem.length === 0 && (!jQuery.nodeName( elem, "form" ) && !jQuery.nodeName( elem, "select" )) )
				return;

			if ( elem[0] == undefined || jQuery.nodeName( elem, "form" ) || elem.options )
				ret.push( elem );

			else
				ret = jQuery.merge( ret, elem );

		});

		return ret;
	},

	attr: function( elem, name, value ) {
		// don't set attributes on text and comment nodes
		if (!elem || elem.nodeType == 3 || elem.nodeType == 8)
			return undefined;

		var notxml = !jQuery.isXMLDoc( elem ),
			// Whether we are setting (or getting)
			set = value !== undefined,
			msie = jQuery.browser.msie;

		// Try to normalize/fix the name
		name = notxml && jQuery.props[ name ] || name;

		// Only do all the following if this is a node (faster for style)
		// IE elem.getAttribute passes even for style
		if ( elem.tagName ) {

			// These attributes require special treatment
			var special = /href|src|style/.test( name );

			// Safari mis-reports the default selected property of a hidden option
			// Accessing the parent's selectedIndex property fixes it
			if ( name == "selected" && jQuery.browser.safari )
				elem.parentNode.selectedIndex;

			// If applicable, access the attribute via the DOM 0 way
			if ( name in elem && notxml && !special ) {
				if ( set ){
					// We can't allow the type property to be changed (since it causes problems in IE)
					if ( name == "type" && jQuery.nodeName( elem, "input" ) && elem.parentNode )
						throw "type property can't be changed";

					elem[ name ] = value;
				}

				// browsers index elements by id/name on forms, give priority to attributes.
				if( jQuery.nodeName( elem, "form" ) && elem.getAttributeNode(name) )
					return elem.getAttributeNode( name ).nodeValue;

				return elem[ name ];
			}

			if ( msie && notxml &&  name == "style" )
				return jQuery.attr( elem.style, "cssText", value );

			if ( set )
				// convert the value to a string (all browsers do this but IE) see #1070
				elem.setAttribute( name, "" + value );

			var attr = msie && notxml && special
					// Some attributes require a special call on IE
					? elem.getAttribute( name, 2 )
					: elem.getAttribute( name );

			// Non-existent attributes return null, we normalize to undefined
			return attr === null ? undefined : attr;
		}

		// elem is actually elem.style ... set the style

		// IE uses filters for opacity
		if ( msie && name == "opacity" ) {
			if ( set ) {
				// IE has trouble with opacity if it does not have layout
				// Force it by setting the zoom level
				elem.zoom = 1;

				// Set the alpha filter to set the opacity
				elem.filter = (elem.filter || "").replace( /alpha\([^)]*\)/, "" ) +
					(parseInt( value ) + '' == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
			}

			return elem.filter && elem.filter.indexOf("opacity=") >= 0 ?
				(parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100) + '':
				"";
		}

		name = name.replace(/-([a-z])/ig, function(all, letter){
			return letter.toUpperCase();
		});

		if ( set )
			elem[ name ] = value;

		return elem[ name ];
	},

	trim: function( text ) {
		return (text || "").replace( /^\s+|\s+$/g, "" );
	},

	makeArray: function( array ) {
		var ret = [];

		if( array != null ){
			var i = array.length;
			//the window, strings and functions also have 'length'
			if( i == null || array.split || array.setInterval || array.call )
				ret[0] = array;
			else
				while( i )
					ret[--i] = array[i];
		}

		return ret;
	},

	inArray: function( elem, array ) {
		for ( var i = 0, length = array.length; i < length; i++ )
		// Use === because on IE, window == document
			if ( array[ i ] === elem )
				return i;

		return -1;
	},

	merge: function( first, second ) {
		// We have to loop this way because IE & Opera overwrite the length
		// expando of getElementsByTagName
		var i = 0, elem, pos = first.length;
		// Also, we need to make sure that the correct elements are being returned
		// (IE returns comment nodes in a '*' query)
		if ( jQuery.browser.msie ) {
			while ( elem = second[ i++ ] )
				if ( elem.nodeType != 8 )
					first[ pos++ ] = elem;

		} else
			while ( elem = second[ i++ ] )
				first[ pos++ ] = elem;

		return first;
	},

	unique: function( array ) {
		var ret = [], done = {};

		try {

			for ( var i = 0, length = array.length; i < length; i++ ) {
				var id = jQuery.data( array[ i ] );

				if ( !done[ id ] ) {
					done[ id ] = true;
					ret.push( array[ i ] );
				}
			}

		} catch( e ) {
			ret = array;
		}

		return ret;
	},

	grep: function( elems, callback, inv ) {
		var ret = [];

		// Go through the array, only saving the items
		// that pass the validator function
		for ( var i = 0, length = elems.length; i < length; i++ )
			if ( !inv != !callback( elems[ i ], i ) )
				ret.push( elems[ i ] );

		return ret;
	},

	map: function( elems, callback ) {
		var ret = [];

		// Go through the array, translating each of the items to their
		// new value (or values).
		for ( var i = 0, length = elems.length; i < length; i++ ) {
			var value = callback( elems[ i ], i );

			if ( value != null )
				ret[ ret.length ] = value;
		}

		return ret.concat.apply( [], ret );
	}
});

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",

	props: {
		"for": "htmlFor",
		"class": "className",
		"float": styleFloat,
		cssFloat: styleFloat,
		styleFloat: styleFloat,
		readonly: "readOnly",
		maxlength: "maxLength",
		cellspacing: "cellSpacing"
	}
});

jQuery.each({
	parent: function(elem){return elem.parentNode;},
	parents: function(elem){return jQuery.dir(elem,"parentNode");},
	next: function(elem){return jQuery.nth(elem,2,"nextSibling");},
	prev: function(elem){return jQuery.nth(elem,2,"previousSibling");},
	nextAll: function(elem){return jQuery.dir(elem,"nextSibling");},
	prevAll: function(elem){return jQuery.dir(elem,"previousSibling");},
	siblings: function(elem){return jQuery.sibling(elem.parentNode.firstChild,elem);},
	children: function(elem){return jQuery.sibling(elem.firstChild);},
	contents: function(elem){return jQuery.nodeName(elem,"iframe")?elem.contentDocument||elem.contentWindow.document:jQuery.makeArray(elem.childNodes);}
}, function(name, fn){
	jQuery.fn[ name ] = function( selector ) {
		var ret = jQuery.map( this, fn );

		if ( selector && typeof selector == "string" )
			ret = jQuery.multiFilter( selector, ret );

		return this.pushStack( jQuery.unique( ret ) );
	};
});

jQuery.each({
	appendTo: "append",
	prependTo: "prepend",
	insertBefore: "before",
	insertAfter: "after",
	replaceAll: "replaceWith"
}, function(name, original){
	jQuery.fn[ name ] = function() {
		var args = arguments;

		return this.each(function(){
			for ( var i = 0, length = args.length; i < length; i++ )
				jQuery( args[ i ] )[ original ]( this );
		});
	};
});

jQuery.each({
	removeAttr: function( name ) {
		jQuery.attr( this, name, "" );
		if (this.nodeType == 1)
			this.removeAttribute( name );
	},

	addClass: function( classNames ) {
		jQuery.className.add( this, classNames );
	},

	removeClass: function( classNames ) {
		jQuery.className.remove( this, classNames );
	},

	toggleClass: function( classNames ) {
		jQuery.className[ jQuery.className.has( this, classNames ) ? "remove" : "add" ]( this, classNames );
	},

	remove: function( selector ) {
		if ( !selector || jQuery.filter( selector, [ this ] ).r.length ) {
			// Prevent memory leaks
			jQuery( "*", this ).add(this).each(function(){
				jQuery.event.remove(this);
				jQuery.removeData(this);
			});
			if (this.parentNode)
				this.parentNode.removeChild( this );
		}
	},

	empty: function() {
		// Remove element nodes and prevent memory leaks
		jQuery( ">*", this ).remove();

		// Remove any remaining nodes
		while ( this.firstChild )
			this.removeChild( this.firstChild );
	}
}, function(name, fn){
	jQuery.fn[ name ] = function(){
		return this.each( fn, arguments );
	};