How To Enter The Value in Text Area Without Using sendKeys()

Normally for entering the data in Text area in selenium we are using sendKeys().
But by Using JavascriptExecutor ,we can also enter the data in any text box .


Example:

driver.get("http://www.google.com/");
JavascriptExecutor JavascriptExecutor = (JavascriptExecutor) driver;
JavascriptExecutor .executeScript("document.getElementById('Id').value='qalearningguide'");