java - 如何在Selenium WebDriver Java中使用JavaScript(How to use JavaScript with Selenium WebDriver Java)

Question

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

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

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

(我已经按照一些指南和“ 入门”页面进行操作：第一行有一条指令可以运行：)

$ ./go webdriverjs

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

(我的问题：从哪个文件夹/位置运行/执行上面提到的命令？)

  ask by Ripon Al Wasim translate from so

Answer 1

Based on your previous questions, I suppose you want to run JavaScript snippets from Java's WebDriver .

(根据您之前的问题，我想您想要从Java的WebDriver运行JavaScript代码段。)

Please correct me if I'm wrong.

(如果我错了，请纠正我。)

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).

(WebDriverJs实际上是“只是”另一种WebDriver语言绑定（您可以用Java，C＃，Ruby，Python，JS编写测试，甚至可能还有更多语言）。)

This one, particularly, is JavaScript, and allows you therefore to write tests in JavaScript.

(特别是这一个是JavaScript，因此允许您用JavaScript编写测试。)

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

(如果要在Java WebDriver运行JavaScript代码，请执行以下操作：)

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

I like to do this, also:

(我也喜欢这样做：)

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

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

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

(您可以在此处，文档中找到更多相关文档，或者最好在JavascriptExecutor的JavaDocs中找到 。)

The executeScript() takes function calls and raw JS, too.

(executeScript()接受函数调用和原始JS。)

You can return a value from it and you can pass lots of complicated arguments to it, some random examples:

(你可以从它return一个值，你可以传递许多复杂的参数，一些随机的例子：)

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

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

3.  // 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';" + "}" );