Mastering Selenium WebDriver 3.0 - Second Edition

What about asynchronous scripts?

Everything that we have looked at so far has been a synchronous piece of JavaScript. However, what if we wanted to perform some asynchronous JavaScript calls as a part of our test? Well, we can do this. The JavascriptExecutor also has a method called executeAsyncScript(). This will allow you to run some JavaScript that does not respond instantly. Let's have a look at some examples.

First of all, we are going to write a very simple bit of JavaScript that will wait for 25 seconds before triggering a callback, as follows:

@Testprivate void javascriptExample() {    driver.manage().timeouts().setScriptTimeout(60,     TimeUnit.SECONDS);    driver.executeAsyncScript("var callback =      arguments[arguments.length - 1];  window.setTimeout(callback, ...