Injecting JavaScript for selecting the option button using UiPath Inject JS Activity

Question

I am trying to automate one of the business process using UiPath. One of the requirement was to select the option button "Containing" as shown below.

In UiPath, there is a activity to InJect JS on a webpage and i would like to use this activity. For this to work, i need to write a JavaScript to select the option.

HTML tag for the radio button is below :

<INPUT type="radio" value="containing" name="selSearchField" ></Input>

Answer 1

This worked 

function check() 
{
 if(document.readyState === "complete") 
 {
    document.getElementsByName("selSearchField")[1].checked = true;
  }
}