有没有办法在 Selenium WebDriver 中使用 JavaScript 通过 XPath 获取元素? [英] Is there a way to get element by XPath using JavaScript in Selenium WebDriver?

问题描述

我正在寻找类似的东西:

getElementByXpath(//html[1]/body[1]/div[1]).innerHTML

我需要使用 JS 获取元素的 innerHTML(在 Selenium WebDriver/Java 中使用它，因为 WebDriver 无法找到它本身)，但是如何?

我可以使用 ID 属性，但并非所有元素都有 ID 属性.

[已修复]

我正在使用 jsoup 在 Java 中完成它.这适合我的需求.

解决方案

你可以使用document.evaluate:

<块引用>

计算 XPath 表达式字符串并返回结果如果可能，请指定类型.

它是 w3 标准化 和整个文档:https://developer.mozilla.org/en-US/docs/Web/API/Document.evaluate

function getElementByXpath(path) {返回 document.evaluate(path, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;}console.log( getElementByXpath("//html[1]/body[1]/div[1]"));

foo

https://gist.github.com/yckart/6351935

还有关于 mozilla 开发者网络的精彩介绍:https://developer.mozilla.org/en-US/docs/Introduction_to_using_XPath_in_JavaScript#document.evaluate

<小时>

替代版本，使用XPathEvaluator:

function getElementByXPath(xpath) {返回新的 XPathEvaluator().createExpression(xpath).evaluate(文档，XPathResult.FIRST_ORDERED_NODE_TYPE).singleNodeValue}console.log( getElementByXPath("//html[1]/body[1]/div[1]"));

<div>foo/bar</div>

I am looking for something like:

getElementByXpath(//html[1]/body[1]/div[1]).innerHTML

I need to get the innerHTML of elements using JS (to use that in Selenium WebDriver/Java, since WebDriver can't find it itself), but how?

I could use ID attribute, but not all elements have ID attribute.

[FIXED]

I am using jsoup to get it done in Java. That works for my needs.

解决方案

You can use document.evaluate:

Evaluates an XPath expression string and returns a result of the specified type if possible.

It is w3-standardized and whole documented: https://developer.mozilla.org/en-US/docs/Web/API/Document.evaluate

function getElementByXpath(path) {
  return document.evaluate(path, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
}

console.log( getElementByXpath("//html[1]/body[1]/div[1]") );

<div>foo</div>

https://gist.github.com/yckart/6351935

There's also a great introduction on mozilla developer network: https://developer.mozilla.org/en-US/docs/Introduction_to_using_XPath_in_JavaScript#document.evaluate

---

Alternative version, using XPathEvaluator:

function getElementByXPath(xpath) {
  return new XPathEvaluator()
    .createExpression(xpath)
    .evaluate(document, XPathResult.FIRST_ORDERED_NODE_TYPE)
    .singleNodeValue
}

console.log( getElementByXPath("//html[1]/body[1]/div[1]") );

<div>foo/bar</div>

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