jQuery 查找似乎不起作用 [英] jQuery find does not seem to work

问题描述

I have a DocumentFragment stored in "selectedContents", and I am trying to find "span" elements in it, with the help of jQuery. It has two child nodes, where the first one is a text node, and the second one a span.

When I try $(selectedContents.childNodes).find('span'), it returns an empty set!

However, when I print the "$(selectedContents.childNodes)[1].localName" it says "span"!

Is there anything wrong in my find? Please help.

Thanks
Srikanth

解决方案

Because you're passing a collection of elements, you need to use .filter() to filter the <span> out of the set.

$(selectedContents.childNodes).filter('span');

• http://api.jquery.com/filter/

The .find() method is used to search for descendants.

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EDIT: Note that your approach of passing the childNodes into the jQuery object is correct. You can't pass a documentFragment as some suggest.

Here's an example to illustrate: http://jsfiddle.net/P8nur/

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