相关疑难解决方法(0)

想象一下,我有以下内容(修改自http://viralpatel.net/blogs/jquery-get-text-element-without-child-element/)

<div id="foo">
    first
    <div id="bar1">
        jumps over a lazy dog!
    </div>
    second
    <div id="bar2">
        another jumps over a lazy dog!
    </div>
    third
</div>

如何从DOM中删除(仅文本)"first","second"和"third"而不影响任何子元素.