How do you send console messages and errors to alert?

Question

I would like to pass errors to an alert to warn the user they made mistake in their code even if they don\'t have console open.

    var doc=(frame.contentWin         


        

Answer 1

You could wrap the script in its own try/catch, something like:

var doc=(frame.contentWindow.document || obj.contentDocument|| obj.contentWindow);
var head = doc.getElementsByTagName('head')[0];
var scriptElement = doc.createElement('script');
scriptElement.setAttribute('type', 'text/javascript');
scriptElement.text = "try{"+scripts+"}catch(e){console.error(e);alert('Found this error: ' + e +'. Check the console.')}"
head.appendChild(scriptElement);