Uncaught DOMException: Failed to execute '$' on 'CommandLineAPI': not a valid selector

Question

I am writing automation UI tests for my web page using selenium. I have an element on the web page which I am testing:

<< input type=\"checkbox\" id         


        

Answer 1

This error message...

Failed to execute '$' on 'CommandLineAPI': '#screening_questions[0].multiple_choice[0]-dealbreakerField' is not a valid selector.

...implies that the Locator Strategy you have adapted is not a valid selector.

As per the HTML you have shared the desired element is a <input> tag with type attribute as checkbox and to use the id attribute you have to escape the . characters and you can use either of the following options :

• cssSelector :

  "input[id=\"screening_questions[0].multiple_choice[0]-dealbreakerField\"][type='checkbox']"
  

• xpath :

  "//input[@id=\"screening_questions[0].multiple_choice[0]-dealbreakerField\"][@type='checkbox']"