src/traversing.js

   1 jQuery.fn.extend({
   2         find: function( selector ) {
   3                 var ret = this.pushStack( "", "find", selector ), length = 0;
   4
   5                 for ( var i = 0, l = this.length; i < l; i++ ) {
   6                         length = ret.length;
   7                         jQuery.find( selector, this[i], ret );
   8
   9                         if ( i > 0 ) {
  10                                 // Make sure that the results are unique
  11                                 for ( var n = length; n < ret.length; n++ ) {
  12                                         for ( var r = 0; r < length; r++ ) {
  13                                                 if ( ret[r] === ret[n] ) {
  14                                                         ret.splice(n--, 1);
  15                                                         break;
  16                                                 }
  17                                         }
  18                                 }
  19                         }
  20                 }
  21
  22                 return ret;
  23         },
  24
  25         filter: function( selector ) {
  26                 return this.pushStack(
  27                         jQuery.isFunction( selector ) &&
  28                         jQuery.grep(this, function(elem, i){
  29                                 return selector.call( elem, i );
  30                         }) ||
  31
  32                         jQuery.multiFilter( selector, jQuery.grep(this, function(elem){
  33                                 return elem.nodeType === 1;
  34                         }) ), "filter", selector );
  35         },
  36
  37         closest: function( selector ) {
  38                 var pos = jQuery.expr.match.POS.test( selector ) ? jQuery(selector) : null,
  39                         closer = 0;
  40
  41                 return this.map(function(){
  42                         var cur = this;
  43                         while ( cur && cur.ownerDocument ) {
  44                                 if ( pos ? pos.index(cur) > -1 : jQuery(cur).is(selector) ) {
  45                                         jQuery.data(cur, "closest", closer);
  46                                         return cur;
  47                                 }
  48                                 cur = cur.parentNode;
  49                                 closer++;
  50                         }
  51                 });
  52         },
  53
  54         not: function( selector ) {
  55                 if ( typeof selector === "string" )
  56                         // test special case where just one selector is passed in
  57                         if ( isSimple.test( selector ) )
  58                                 return this.pushStack( jQuery.multiFilter( selector, this, true ), "not", selector );
  59                         else
  60                                 selector = jQuery.multiFilter( selector, this );
  61
  62                 var isArrayLike = selector.length && selector[selector.length - 1] !== undefined && !selector.nodeType;
  63                 return this.filter(function() {
  64                         return isArrayLike ? jQuery.inArray( this, selector ) < 0 : this != selector;
  65                 });
  66         },
  67
  68         add: function( selector ) {
  69                 return this.pushStack( jQuery.unique( jQuery.merge(
  70                         this.get(),
  71                         typeof selector === "string" ?
  72                                 jQuery( selector ) :
  73                                 jQuery.makeArray( selector )
  74                 )));
  75         },
  76
  77         eq: function( i ) {
  78                 return this.slice( i, +i + 1 );
  79         },
  80
  81         slice: function() {
  82                 return this.pushStack( Array.prototype.slice.apply( this, arguments ),
  83                         "slice", Array.prototype.slice.call(arguments).join(",") );
  84         },
  85
  86         map: function( callback ) {
  87                 return this.pushStack( jQuery.map(this, function(elem, i){
  88                         return callback.call( elem, i, elem );
  89                 }));
  90         },
  91
  92         andSelf: function() {
  93                 return this.add( this.prevObject );
  94         },
  95
  96         end: function() {
  97                 return this.prevObject || jQuery(null);
  98         }
  99 });
 100
 101 jQuery.each({
 102         parent: function(elem){return elem.parentNode;},
 103         parents: function(elem){return jQuery.dir(elem,"parentNode");},
 104         next: function(elem){return jQuery.nth(elem,2,"nextSibling");},
 105         prev: function(elem){return jQuery.nth(elem,2,"previousSibling");},
 106         nextAll: function(elem){return jQuery.dir(elem,"nextSibling");},
 107         prevAll: function(elem){return jQuery.dir(elem,"previousSibling");},
 108         siblings: function(elem){return jQuery.sibling(elem.parentNode.firstChild,elem);},
 109         children: function(elem){return jQuery.sibling(elem.firstChild);},
 110         contents: function(elem){return jQuery.nodeName(elem,"iframe")?elem.contentDocument||elem.contentWindow.document:jQuery.makeArray(elem.childNodes);}
 111 }, function(name, fn){
 112         jQuery.fn[ name ] = function( selector ) {
 113                 var ret = jQuery.map( this, fn );
 114
 115                 if ( selector && typeof selector == "string" )
 116                         ret = jQuery.multiFilter( selector, ret );
 117
 118                 return this.pushStack( jQuery.unique( ret ), name, selector );
 119         };
 120 });