How to use

convertToJsObjects

method

in

org.openqa.selenium.firefox.FirefoxDriver

public Object executeScript(String script, Object... args) {
   // Escape the quote marks
   script = script.replaceAll("\"", "\\\"");
   Object[] convertedArgs = convertToJsObjects(args);
   Command command = new Command(context, null, "executeScript", script, convertedArgs);
   Response response = extension.sendMessageAndWaitForResponse(WebDriverException.class, command);
   context = response.getContext();
   response.ifNecessaryThrow(WebDriverException.class);
   if ("NULL".equals(response.getExtraResult("resultType")))
    return null;
   String resultType = (String) response.getExtraResult("resultType");
   if ("ELEMENT".equals(resultType))
     return new FirefoxWebElement(this, response.getResponseText());
   Object result = response.getExtraResult("response");
   if (result instanceof Integer)
    return new Long(response.getResponseText());
   return result;
 }