scriptEngine() This method is used to return the engine language name of the browser you're working with. It will return one of three values: JScript, VBA, or VBScript, and is useful when redirecting users to a page which supports that language. syntax: scriptEngine() EXAMPLE document.write("The Language being used is: "+scriptEngine() ); This example will write to the screen the caption given in the parentheses abopve, plus the language being used, which is one of the three languages mentioned earlier: JScript, VBA, or VBScript.