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- define( [
- "../core",
- "../var/indexOf",
- "./var/rneedsContext",
- "../selector"
- ], function( jQuery, indexOf, rneedsContext ) {
- "use strict";
- var risSimple = /^.[^:#\[\.,]*$/;
- // Implement the identical functionality for filter and not
- function winnow( elements, qualifier, not ) {
- if ( jQuery.isFunction( qualifier ) ) {
- return jQuery.grep( elements, function( elem, i ) {
- /* jshint -W018 */
- return !!qualifier.call( elem, i, elem ) !== not;
- } );
- }
- if ( qualifier.nodeType ) {
- return jQuery.grep( elements, function( elem ) {
- return ( elem === qualifier ) !== not;
- } );
- }
- if ( typeof qualifier === "string" ) {
- if ( risSimple.test( qualifier ) ) {
- return jQuery.filter( qualifier, elements, not );
- }
- qualifier = jQuery.filter( qualifier, elements );
- }
- return jQuery.grep( elements, function( elem ) {
- return ( indexOf.call( qualifier, elem ) > -1 ) !== not && elem.nodeType === 1;
- } );
- }
- jQuery.filter = function( expr, elems, not ) {
- var elem = elems[ 0 ];
- if ( not ) {
- expr = ":not(" + expr + ")";
- }
- return elems.length === 1 && elem.nodeType === 1 ?
- jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [] :
- jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {
- return elem.nodeType === 1;
- } ) );
- };
- jQuery.fn.extend( {
- find: function( selector ) {
- var i, ret,
- len = this.length,
- self = this;
- if ( typeof selector !== "string" ) {
- return this.pushStack( jQuery( selector ).filter( function() {
- for ( i = 0; i < len; i++ ) {
- if ( jQuery.contains( self[ i ], this ) ) {
- return true;
- }
- }
- } ) );
- }
- ret = this.pushStack( [] );
- for ( i = 0; i < len; i++ ) {
- jQuery.find( selector, self[ i ], ret );
- }
- return len > 1 ? jQuery.uniqueSort( ret ) : ret;
- },
- filter: function( selector ) {
- return this.pushStack( winnow( this, selector || [], false ) );
- },
- not: function( selector ) {
- return this.pushStack( winnow( this, selector || [], true ) );
- },
- is: function( selector ) {
- return !!winnow(
- this,
- // If this is a positional/relative selector, check membership in the returned set
- // so $("p:first").is("p:last") won't return true for a doc with two "p".
- typeof selector === "string" && rneedsContext.test( selector ) ?
- jQuery( selector ) :
- selector || [],
- false
- ).length;
- }
- } );
- } );
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