Added a number of additional speed gains (we now hold our own against Dojo and DOMQue...
[jquery.git] / src / jquery / jquery.js
index 061d86c..ddb08a4 100644 (file)
@@ -614,10 +614,13 @@ jQuery.fn = jQuery.prototype = {
         */
        wrap: function() {
                // The elements to wrap the target around
-               var a = jQuery.clean(arguments);
+               var a, args = arguments;
 
                // Wrap each of the matched elements individually
                return this.each(function(){
+                       if ( !a )
+                               a = jQuery.clean(args, this.ownerDocument);
+
                        // Clone the structure that we're using to wrap
                        var b = a[0].cloneNode(true);
 
@@ -814,9 +817,9 @@ jQuery.fn = jQuery.prototype = {
         * @cat DOM/Traversing
         */
        find: function(t) {
-               return this.pushStack( jQuery.map( this, function(a){
+               return this.pushStack( jQuery.unique( jQuery.map( this, function(a){
                        return jQuery.find(t,a);
-               }), t );
+               }) ), t );
        },
 
        /**
@@ -1038,7 +1041,7 @@ jQuery.fn = jQuery.prototype = {
         * @cat DOM/Traversing
         */
        is: function(expr) {
-               return expr ? jQuery.filter(expr,this).r.length > 0 : false;
+               return expr ? jQuery.multiFilter(expr,this).length > 0 : false;
        },
        
        /**
@@ -1121,12 +1124,15 @@ jQuery.fn = jQuery.prototype = {
         * @cat Core
         */
        domManip: function(args, table, dir, fn){
-               var clone = this.length > 1; 
-               var a = jQuery.clean(args);
-               if ( dir < 0 )
-                       a.reverse();
+               var clone = this.length > 1, a; 
 
                return this.each(function(){
+                       if ( !a ) {
+                               a = jQuery.clean(args, this.ownerDocument);
+                               if ( dir < 0 )
+                                       a.reverse();
+                       }
+
                        var obj = this;
 
                        if ( table && jQuery.nodeName(this, "table") && jQuery.nodeName(a[0], "tr") )
@@ -1339,10 +1345,7 @@ jQuery.extend({
 
                // internal only, use is(".class")
                has: function( t, c ) {
-                       t = t.className || t;
-                       // escape regex characters
-                       c = c.replace(/([\.\\\+\*\?\[\^\]\$\(\)\{\}\=\!\<\>\|\:])/g, "\\$1");
-                       return t && new RegExp("(^|\\s)" + c + "(\\s|$)").test( t );
+                       return jQuery.inArray( c, (t.className || t).toString().split(/\s+/) ) > -1;
                }
        },
 
@@ -1402,12 +1405,14 @@ jQuery.extend({
 
        curCSS: function(elem, prop, force) {
                var ret;
+
+               if (prop == "opacity" && jQuery.browser.msie) {
+                       ret = jQuery.attr(elem.style, "opacity");
+                       return ret == "" ? "1" : ret;
+               }
                
-               if (prop == "opacity" && jQuery.browser.msie)
-                       return jQuery.attr(elem.style, "opacity");
-                       
                if (prop == "float" || prop == "cssFloat")
-                   prop = jQuery.browser.msie ? "styleFloat" : "cssFloat";
+                       prop = jQuery.browser.msie ? "styleFloat" : "cssFloat";
 
                if (!force && elem.style[prop])
                        ret = elem.style[prop];
@@ -1431,17 +1436,16 @@ jQuery.extend({
                                });
 
                } else if (elem.currentStyle) {
-
                        var newProp = prop.replace(/\-(\w)/g,function(m,c){return c.toUpperCase();});
                        ret = elem.currentStyle[prop] || elem.currentStyle[newProp];
-                       
                }
 
                return ret;
        },
        
-       clean: function(a) {
+       clean: function(a, doc) {
                var r = [];
+               doc = doc || document;
 
                jQuery.each( a, function(i,arg){
                        if ( !arg ) return;
@@ -1452,7 +1456,7 @@ jQuery.extend({
                         // Convert html string into DOM nodes
                        if ( typeof arg == "string" ) {
                                // Trim whitespace, otherwise indexOf won't work as expected
-                               var s = jQuery.trim(arg), div = document.createElement("div"), tb = [];
+                               var s = jQuery.trim(arg), div = doc.createElement("div"), tb = [];
 
                                var wrap =
                                         // option or optgroup
@@ -1527,18 +1531,20 @@ jQuery.extend({
                };
                
                // IE actually uses filters for opacity ... elem is actually elem.style
-               if ( name == "opacity" && jQuery.browser.msie && value != undefined ) {
-                       // 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
-                       return elem.filter = elem.filter.replace(/alpha\([^\)]*\)/gi,"") +
-                               ( value == 1 ? "" : "alpha(opacity=" + value * 100 + ")" );
+               if ( name == "opacity" && jQuery.browser.msie ) {
+                       if ( value != undefined ) {
+                               // 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\([^)]*\)/,"") +
+                                       (parseFloat(value).toString() == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
+                       }
 
-               } else if ( name == "opacity" && jQuery.browser.msie )
                        return elem.filter ? 
-                               parseFloat( elem.filter.match(/alpha\(opacity=(.*)\)/)[1] ) / 100 : 1;
+                               (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100).toString() : "";
+               }
                
                // Certain attributes only work when accessed via the old DOM 0 way
                if ( fix[name] ) {
@@ -1620,19 +1626,27 @@ jQuery.extend({
         * @cat JavaScript
         */
        merge: function(first, second) {
-               var r = [].slice.call( first, 0 );
+               // We have to loop this way because IE & Opera overwrite the length
+               // expando of getElementsByTagName
+               for ( var i = 0; second[i]; i++ )
+                       first.push(second[i]);
+               return first;
+       },
 
-               // Now check for duplicates between the two arrays
-               // and only add the unique items
-               for ( var i = 0, sl = second.length; i < sl; i++ )
-                       // Check for duplicates
-                       if ( jQuery.inArray( second[i], r ) == -1 )
-                               // The item is unique, add it
-                               first.push( second[i] );
+       unique: function(first) {
+               var r = [], num = jQuery.mergeNum++;
 
-               return first;
+               for ( var i = 0, fl = first.length; i < fl; i++ )
+                       if ( first[i].mergeNum != num ) {
+                               first[i].mergeNum = num;
+                               r.push(first[i]);
+                       }
+
+               return r;
        },
 
+       mergeNum: 0,
+
        /**
         * Filter items out of an array, by using a filter function.
         *
@@ -1726,17 +1740,7 @@ jQuery.extend({
                        }
                }
 
-               var r = result.length ? [ result[0] ] : [];
-
-               check: for ( var i = 1, rl = result.length; i < rl; i++ ) {
-                       for ( var j = 0; j < i; j++ )
-                               if ( result[i] == r[j] )
-                                       continue check;
-
-                       r.push( result[i] );
-               }
-
-               return r;
+               return result;
        }
 });