console.log throws error on Internet Explorer IE

console.log is a great debugging tool. It is better than alerts.  Older versions of IE will give you a

'console' is undefined

Error if you try to use it. I put the following at the top of a javascript file that is included in my web app and it kept IE from throwing script errors.

//If we are on IE8 or similar console won't be defined
if (typeof console === 'undefined') { ////do an alert in IE. You could make it write to another window if that worked better
//console = { log: function () { alert(arguments[0]); } };
//just swallow the call in IE
console = { log: function () { } };
}

I crafted this solution from this page.