XPath匹配@class值和元素值? [英] XPath to match @class value and element value?

问题描述

我想找到这个元素，

<div class="item-price">$0.99</div>

使用XPath表示选择div元素，这些元素的class属性等于"item-price"并且其内容包含美元符号($).

using XPath which says select div elements whose class attribute equals "item-price" and whose content contains a dollar sign ($).

推荐答案

此XPath表达式:

//div[contains(@class, 'item-price') and contains(., '$')]

将匹配包含'$'的item-price类的所有div元素.

Will match all div elements of the item-price class containing a '$'.

如果要匹配@class值中指定了多种CSS样式的情况，则在@class的测试中使用contains()很有用.

It's useful to use contains() in the test on @class if you want to match cases where there are multiple CSS styles specified in the @class value.

注意:要获得更可靠的解决方案，请应用以下技术来避免意外的子字符串匹配(item-price匹配，例如item-prices):

Caution: For a more robust solution, apply the following technique to avoid unintended substring matches (item-price matching, say, item-prices):

//div[contains(concat(' ',@class,' '), ' item-price ') and contains(., '$')]

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