using javascript in selenium javascript executor

Question

I want to verify if my required text is appearing on page. i cant use selenium webdriver's gettext() method as its throwing permission exception. so i am using javascript to compare the text.

 String scriptToExec = "var result = document.getElementsByClassName('Sender');
    for(var element in result){
    if (element.text.contains('mytext'))
    {return true;}
    else
    {return false;}}";          

    JavascriptExecutor js = (JavascriptExecutor) driver;
    Boolean result = (Boolean) (js.executeScript(scriptToExec));

I am getting this exception: org.openqa.selenium.remote.

ErrorHandler $UnknownServerException: element.text is undefined

Answer 1

Many JavaScript issues here as well as a severe lack of understanding about selectors. contains isn't part of the standard and won't work with older browsers:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/contains

If there is element.text is undefined for whatever reason, you'll need to cope with that:

if (element && element.text && element.text.contains('mytext'))

(meaning, if "element" is something and element.text is something and if element.text contains 'mytext')

Also, I can see you are basically trying to do a contains search on some text - you absolutely do not need JavaScript for this. It can be done using an XPath selector!