How to execute JavaScript in Robot Framework - selenium

Question

Below is my code. When I run this, it shows a WebDriverException. How do I execute JavaScript code in Robot Framework?
This, return $(arguments[0]).data('${ToolTip}').options.title code is doing well in -java Selenium web driver.
Mouse Over ${CreateTask}
Execute JavaScript return $(arguments[0]).data('${ToolTip}').options.title

Answer 1

From http://rtomac.github.io/robotframework-selenium2library/doc/Selenium2Library.html#Execute%20Javascript:
Note that, by default, the code will be executed in the context of the
Selenium object itself, so this will refer to the Selenium object. Use
window to refer to the window of your application, e.g.
window.document.getElementById('foo').
So
Mouse Over ${CreateTask}
Execute JavaScript return window.$(arguments[0]).data('${ToolTip}').options.title
Assuming there is some library (jQuery most probably) that actually understands the $ shorthand.

Answer 2

arguments[0] normally refers to arguments passed to your script.
Selenium2Library's Execute JavaScript calls
webdriver.execute_javascript and does not pass any arguments to it. arguments[0] is therefore undefined.
See Is there a way to provide arguments to "Execute JavaScript" in Robot Framework? for a workaround.

Answer 3

Use any one method from below options
Execute Javascript document.getElementById('authUser').value='admin'
${ele} Get WebElement id=clearPass
Execute Javascript arguments[0].value='pass'; ARGUMENTS ${ele}
Execute Javascript alert(arguments[0]); ARGUMENTS 123
Execute Javascript document.evaluate("//*[text()='Patients']",document.body,null,9,null).singleNodeValue.click();
Execute Javascript document.querySelector('[data-bind="click: changePassword"]').click();
${ele} Get WebElement //*[text()='Logout']
Execute Javascript arguments[0].click(); ARGUMENTS ${ele}