Road to execute JavaScript in Webdriver

Some time we need to execute JavaScript function of application using webdriver or need to inject a piece of java script code to perform some action in application.

Webdriver provide a “JavascriptExecutor “class for executing java script, Here is step and code for the same.
First you need to create “JavascriptExecutor” class object.

JavascriptExecutor js = (JavascriptExecutor) driver;

Now call “executeScript()” method by passing java script code as a argument.

js .executeScript(“java script code”)

Here are some more examples.

String readyState = (String)js.executeScript("return document.readyState");

String title = (String)js.executeScript("return document.title");

String domain = (String)js.executeScript("return document.domain");

WebElement el   = (WebElement)js.executeScript("return document.getElementById('rentc');");

js.executeScript("return document.getElementById('submit').click();");