X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Ftraversing.js;h=6375d9d1f3f6e29c25161d8cb53911710793d026;hb=f078e930edb25190bb04c682ad067b72331b6e69;hp=4efe2823bca2dec36da69ea2793e9bf1f8ad7a36;hpb=2b481b93cfca62f95aa7005e7db651456fa08e65;p=jquery.git

diff --git a/src/traversing.js b/src/traversing.js
index 4efe282..6375d9d 100644
--- a/src/traversing.js
+++ b/src/traversing.js
@@ -2,14 +2,13 @@ var runtil = /Until$/,
 	rparentsprev = /^(?:parents|prevUntil|prevAll)/,
 	// Note: This RegExp should be improved, or likely pulled from Sizzle
 	rmultiselector = /,/,
-	slice = Array.prototype.slice,
-	join = Array.prototype.join;
+	slice = Array.prototype.slice;
 
 // Implement the identical functionality for filter and not
 var winnow = function( elements, qualifier, keep ) {
 	if ( jQuery.isFunction( qualifier ) ) {
 		return jQuery.grep(elements, function(elem, i) {
-			return !!qualifier.call( elem, i ) === keep;
+			return !!qualifier.call( elem, i, elem ) === keep;
 		});
 
 	} else if ( qualifier.nodeType ) {
@@ -58,6 +57,21 @@ jQuery.fn.extend({
 		return ret;
 	},
 
+	has: function( target ) {
+		var targets = jQuery( target );
+		return this.filter(function() {
+			for ( var i = 0, l = targets.length; i < l; i++ ) {
+				if ( jQuery.contains( this, targets[i] ) ) {
+					return true;
+				}
+			}
+		});
+	},
+
+	contains: function( target ) {
+		return this.has( target ).length > 0;
+	},
+
 	not: function( selector ) {
 		return this.pushStack( winnow(this, selector, false), "not", selector);
 	},
@@ -65,6 +79,10 @@ jQuery.fn.extend({
 	filter: function( selector ) {
 		return this.pushStack( winnow(this, selector, true), "filter", selector );
 	},
+	
+	is: function( selector ) {
+		return !!selector && jQuery.filter( selector, this ).length > 0;
+	},
 
 	closest: function( selectors, context ) {
 		if ( jQuery.isArray( selectors ) ) {
@@ -110,6 +128,21 @@ jQuery.fn.extend({
 			return null;
 		});
 	},
+	
+	// Determine the position of an element within
+	// the matched set of elements
+	index: function( elem ) {
+		if ( !elem || typeof elem === "string" ) {
+			return jQuery.inArray( this[0],
+				// If it receives a string, the selector is used
+				// If it receives nothing, the siblings are used
+				elem ? jQuery( elem ) : this.parent().children() );
+		}
+		// Locate the position of the desired element
+		return jQuery.inArray(
+			// If it receives a jQuery object, the first element is used
+			elem.jquery ? elem[0] : elem, this );
+	},
 
 	add: function( selector, context ) {
 		var set = typeof selector === "string" ?
@@ -122,37 +155,8 @@ jQuery.fn.extend({
 			all );
 	},
 
-	eq: function( i ) {
-		return i === -1 ?
-			this.slice( i ) :
-			this.slice( i, +i + 1 );
-	},
-
-	first: function() {
-		return this.eq( 0 );
-	},
-
-	last: function() {
-		return this.eq( -1 );
-	},
-
-	slice: function() {
-		return this.pushStack( slice.apply( this, arguments ),
-			"slice", join.call(arguments, ",") );
-	},
-
-	map: function( callback ) {
-		return this.pushStack( jQuery.map(this, function(elem, i){
-			return callback.call( elem, i, elem );
-		}));
-	},
-
 	andSelf: function() {
 		return this.add( this.prevObject );
-	},
-
-	end: function() {
-		return this.prevObject || jQuery(null);
 	}
 });
 
@@ -187,7 +191,7 @@ jQuery.each({
 			ret = ret.reverse();
 		}
 
-		return this.pushStack( ret, name, join.call(arguments, ",") );
+		return this.pushStack( ret, name, slice.call(arguments).join(",") );
 	};
 });