Question

I was reading through this thread: Hidden Features of JavaScript?
and found this post: Hidden Features of JavaScript?

I was playing around with the code in firebug and I found that this bit of code seems to work fine:

var fn = function(x) {
   console.log(this.foo);
}
fn.foo = 1;

How come I can access the property of the function before it’s assigned?

Answer 1

The return value 1 is not from console.log(this.foo),

Its from fn.foo = 1, firebug just return last value in its console

Try this, you will see also 1 too

fn=function(){}
fn.foo = 1;