Can we capture JavaScript errors in Selenium

Question

Is is possible to capture errors occurring in DOM in Selenium and use that to flag an error in the test page?

What I'm saying is, if I try to bind an event on a non-existing HTML control, my browser will throw this error: element xyz not found in the console.

Now when my test fails, I want the same error to be logged or displayed. Is this possible?

Answer 1

This might work. Add the below code to your page sourcecode. Then check for the JSError in Selenium:

<script type="text/javascript">
    window.onerror=function(msg){
        $("body").attr("JSError",msg);
    }
</script>