Puppeteer使用xlink:href查找svg

Question

我有以下html：

<button data-testid="likeButton">
    <svg aria-hidden="true">
        <use xlink:href="/logo"></use>
    </svg>
    <span>Like</span>
</button>

现在，<use xlink:href可以是/logo或/logo-filled

如何在Puppeteer中编写xpath表达式来获得这些内容？

我已经尝试过了：

//*[name()='use'][contains(@*='logo')]

但是当我测试它时，我得到了错误：

Unable to perform XPath operation. The prefix "xlink" for attribute "xlink:href" associated with an element type "use" is not bound.

Answer 1

变化

//*[name()='use'][contains(@*='logo')]
                             ^

至

//*[name()='use'][contains(@*,'logo')]
                             ^

或

//use[starts-with(@*,'/logo')]

但关于名称空间，另请参阅How does XPath deal with XML namespaces?