Website with JS doesn't work in IE9 until the Developer Tools is activated

Question

I\'m developing a complex website that heavily leverages jQuery and a number of scripts. On load of the site, none of my scripting is working (though I can confirm that othe

Answer 1

I have run into this issue many times. Basically with variables we do this to check if they are valid

var somevar;
if (somevar)
 //do code

this works because somevar will resolve to undefined. But if your checking a window property for example. window.console.

if (console) <---- this throws an exception

You cannot do the same check. The browser treats it differently. Basically only doing this

if (window.console) <---- will NOT throw an exception if undefined
//some code

this will work the same as the first example. So you need to change your code to

function log(msg){
 if (window.console){
     console.log(msg);
 }
}