Insert a "Back" or "Close" button on a Single_Page_Update Datapage

[Elderberg]

I've inserted the following into an html block:

 

<input type="button" name="Mod0CancelRecord1" value="CANCEL" class="cbBackButton">

 

And then in the footer i've inserted:

 

document.getElementsByName('Mod0CancelRecord1')[0].onclick = function(){ 

if (confirm("Close Window?")) {
     window.close();
  }
};

 

but unfortunately i've discovered :

Quote

This method can only be called on windows that were opened by a script using the Window.open() method. If the window was not opened by a script, an error similar to this one appears in the console: Scripts may not close windows that were not opened by script.

 

Any ideas or suggestions are welcome

 

 

[AtayBalunbalunan]

Suggestions in https://stackoverflow.com/questions/23306882/javascript-close-current-window may work.