如何在Selenium WebDriver Java中使用JavaScript [英] How to use JavaScript with Selenium WebDriver Java

问题描述

我想使用Java与WebDriver（Selenium 2）一起使用JavaScript。

I want to use JavaScript with WebDriver (Selenium 2) using Java.

我已经按照一些指南和 使用入门页面：第一行有一条说明可以运行：

I've followed some a guide and on Getting Started page: there is an instruction at 1st line to run as:

$ ./go webdriverjs

我的问题：上面提到的命令将从哪个文件夹/位置运行/执行？

My question: From which folder/location the command mentioned above will be run/executed?

推荐答案

根据您之前的问题，我想您要从Java的 WebDriver 运行JavaScript代码段。如果我错了，请纠正我。

Based on your previous questions, I suppose you want to run JavaScript snippets from Java's WebDriver. Please correct me if I'm wrong.

WebDriverJs 实际上是只是另一个 WebDriver 语言绑定（您可以使用Java，C＃，Ruby，Python，JS以及可能的更多语言编写测试）。特别是JavaScript，它允许你用JavaScript编写测试。

The WebDriverJs is actually "just" another WebDriver language binding (you can write your tests in Java, C#, Ruby, Python, JS and possibly even more languages as of now). This one, particularly, is JavaScript, and allows you therefore to write tests in JavaScript.

如果你想在Java中运行JavaScript代码 WebDriver ，改为：

If you want to run JavaScript code in Java WebDriver, do this instead:

WebDriver driver = new AnyDriverYouWant();
if (driver instanceof JavascriptExecutor) {
    ((JavascriptExecutor)driver).executeScript("yourScript();");
} else {
    throw new IllegalStateException("This driver does not support JavaScript!");
}

我喜欢这样做，还有：

WebDriver driver = new AnyDriverYouWant();
JavascriptExecutor js;
if (driver instanceof JavascriptExecutor) {
    js = (JavascriptExecutor)driver;
} // else throw...

// later on...
js.executeScript("return document.getElementById('someId');");

您可以在此找到更多文档此处，在文档中，或者，最好是 JavascriptExecutor 的JavaDocs中的api / java / org / openqa / selenium / JavascriptExecutor.htmlrel =noreferrer>。

You can find more documentation on this here, in the documenation, or, preferably, in the JavaDocs of JavascriptExecutor.

executeScript（）也接受函数调用和原始JS。你可以从中返回一个值，你可以传递许多复杂的参数，一些随机的例子：

The executeScript() takes function calls and raw JS, too. You can return a value from it and you can pass lots of complicated arguments to it, some random examples:

// returns the right WebElement
// it's the same as driver.findElement(By.id("someId"))
js.executeScript("return document.getElementById('someId');");

// draws a border around WebElement
WebElement element = driver.findElement(By.anything("tada"));
js.executeScript("arguments[0].style.border='3px solid red'", element);

// changes all input elements on the page to radio buttons
js.executeScript(
        "var inputs = document.getElementsByTagName('input');" +
        "for(var i = 0; i < inputs.length; i++) { " +
        "    inputs[i].type = 'radio';" +
        "}" );

这篇关于如何在Selenium WebDriver Java中使用JavaScript的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！