jquery按xpath选择元素 [英] jquery select element by xpath

问题描述

我有一个xpath选择器。如何使用jQuery获取与该选择器匹配的元素？

I have an xpath selector. How can I get the elements matching that selector using jQuery?

我见过 https://developer.mozilla.org/en/Introduction_to_using_XPath_in_JavaScript 但它不使用jQuery，它似乎有点过于冗长，我认为它不是跨浏览器。

I've seen https://developer.mozilla.org/en/Introduction_to_using_XPath_in_JavaScript but it doesn't use jQuery, and it seems a little too verbose, and I suppose it's not cross-browser.

此外，这个 http://jsfiddle.net/CJRmk/似乎不起作用。

Also, this http://jsfiddle.net/CJRmk/ doesn't seem to work.

alert($("//a").length);

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.0/jquery.min.js"></script>
<a href="a1.php"></a>
<a href="a2.php"></a>

推荐答案

document.evaluate（）（DOM Level 3 XPath） - 唯一缺少的主要浏览器是MSIE。不过，jQuery支持基本的XPath表达式： http://docs.jquery.com/DOM/Traversing / Selectors＃XPath_Selectors （移入当前jQuery版本的插件，请参阅 https：// plugins。 jquery.com/xpath/ ）。它只是将XPath表达式转换为等效的CSS选择器。

document.evaluate() (DOM Level 3 XPath) is supported in Firefox, Chrome, Safari and Opera - the only major browser missing is MSIE. Nevertheless, jQuery supports basic XPath expressions: http://docs.jquery.com/DOM/Traversing/Selectors#XPath_Selectors (moved into a plugin in the current jQuery version, see https://plugins.jquery.com/xpath/). It simply converts XPath expressions into equivalent CSS selectors however.

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