A fallback for IE8 when console.log commands are used in js debugging. IE8 will display a window.alert rather than an error message.

console.log-fallback

var alertFallback = true;
if (typeof console === "undefined" || typeof console.log === "undefined") {
  console = {};
	if (alertFallback) {
		console.log = function(msg) {
			alert(msg);
		};
	} 
	else {
		console.log = function() {};
	}
}