find()方法返回被选元素的后代元素,一路向下直到最后一个后代。
<div>
<p>
<span>1</span>
</p>
<span>2</span>
</div>
<script>
console.log($(‘div‘).find(‘span‘));
</script>
<!--
返回<span>1</span><span>2</span>
-->
children()方法返回被选元素的所有直接子元素。该方法只会向下一级对 DOM 树进行遍历。
<div>
<p>
<span>1</span>
</p>
<span>2</span>
</div>
<script>
console.log($(‘div‘).children(‘span‘));
</script>
<!--
返回<span>2</span>
-->
原文:http://www.cnblogs.com/mazey/p/7073037.html