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jQuery objects have a default length of 0. Simplifies $() some.

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This commit is contained in:
Yehuda Katz 2009-07-17 01:47:26 +00:00
parent a38a5cd531
commit 88bd74c732
1 changed files with 12 additions and 13 deletions
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25
src/core.js
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@ -39,15 +39,12 @@ jQuery.fn = jQuery.prototype = {
var match, elem, ret;
// Handle $(""), $(null), or $(undefined)
if ( !selector ) {
this.length = 0;
return this;
}
if ( !selector ) return this;
// Handle $(DOMElement)
if ( selector.nodeType ) {
this[0] = selector;
this.length = 1;
this.length++;
this.context = selector;
return this;
}
@ -68,17 +65,16 @@ jQuery.fn = jQuery.prototype = {
} else {
elem = document.getElementById( match[3] );
// Handle the case where IE and Opera return items
// by name instead of ID
if ( elem && elem.id !== match[3] ) {
return rootjQuery.find( selector );
}
// Otherwise, we inject the element directly into the jQuery object
this.length = elem ? 1 : 0;
if ( elem ) {
// Handle the case where IE and Opera return items
// by name instead of ID
if ( elem.id !== match[3] ) return rootjQuery.find( selector );
// Otherwise, we inject the element directly into the jQuery object
this.length++;
this[0] = elem;
}
this.context = document;
this.selector = selector;
return this;
@ -117,6 +113,9 @@ jQuery.fn = jQuery.prototype = {
// The current version of jQuery being used
jquery: "@VERSION",
// The default length of a jQuery object is 0
length: 0,
// The number of elements contained in the matched element set
size: function() {
return this.length;