each: function( callback, args ) {
return jQuery.each( this, callback, args );
},
-
- // 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 );
- },
-
- is: function( selector ) {
- return !!selector && jQuery.filter( selector, this ).length > 0;
- },
ready: function( fn ) {
// Attach the listeners
return this;
},
+
+ 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", slice.call(arguments).join(",") );
+ },
+
+ map: function( callback ) {
+ return this.pushStack( jQuery.map(this, function(elem, i){
+ return callback.call( elem, i, elem );
+ }));
+ },
+
+ end: function() {
+ return this.prevObject || jQuery(null);
+ },
// For internal use only.
// Behaves like an Array's method, not like a jQuery method.