如何测试两个jQuery包装的DOM元素是否相同? [英] How can I test if two jQuery wrapped DOM elements are the same?
本文介绍了如何测试两个jQuery包装的DOM元素是否相同?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
这是我想要完成的本质...
< div id =cheese>< / div>
< div id =burger>< / div>
< script>
//包含在jquery中的一些dom节点
var ele1 = $('#cheese');
var ele2 = $('#burger');
var ele3 = $('#burger');
//在ele1(#cheese)中包含的dom节点是否与ele2(#burger)相同?
如果(ele1 == ele2)
{
//应该永远不是真的
}
// dom节点是否包裹在ele2(#汉堡)与el32(#burger)相同?
if(ele2 == ele3)
{
//应始终为真
}
< / script>
解决方案
一个jQuery对象可以被看作是一个原始数组DOM元素
您可以比较原始的DOM元素,如下所示:
if(ele2 [0] === ele3 [0])
I'm writing a sortable list implementation in jQuery (b/c of the infamous scroll-in-div issue, any new solutions for this?). However, I don't know how to compare the elements (triggered on mousedown/mouseup) after they've been wrapped in jQuery. In prototype, it was always ele.domNode.
This is what I'm trying to accomplish in essence...
<div id="cheese"></div>
<div id="burger"></div>
<script>
// Some dom nodes wrapped in jquery
var ele1 = $('#cheese');
var ele2 = $('#burger');
var ele3 = $('#burger');
// Is the dom node wrapped in ele1 (#cheese) the same as in ele2 (#burger)?
if (ele1 == ele2)
{
// Should never be true
}
// Is the dom node wrapped in ele2 (#burger) the same as in el32 (#burger)?
if (ele2 == ele3)
{
// Should always be true
}
</script>
解决方案
A jQuery object can be treated as an array of raw DOM elements.
You can compare the raw DOM elements like this:
if(ele2[0] === ele3[0])
这篇关于如何测试两个jQuery包装的DOM元素是否相同?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文