Are changes made to a global variable, inside a function, reflected globally? Javascript

Question

If I have a global variable, and I change the variable's value inside a function, will the change be reflected outside of the function?

e.g.

var blaah="blaah";

function myFunction(){
 blaah="blaah blaah";
}

console.log(blaah);

Will the output of console.log(); be "blaah", or "blaah blaah".

Why don't you give it a try? You can even run code here in StackOverflow. — elclanrs, Jan 19 '15 at 01:05
It seems to work, this question is more if there are exceptions, or if this is not cross-browser. — Ben, Jan 19 '15 at 01:08
The output would be `blaah`, because you didn't run the function but you have conflicting variable names. If you want to know more I'd suggest you read the [spec](http://www.ecma-international.org/publications/standards/Ecma-262.htm). — elclanrs, Jan 19 '15 at 01:10

score 1 · Accepted Answer · answered Jan 19 '15 at 01:31

Yes, the global variable that you defined would be changed (or edited) when you execute myFunction();. The answer to your question regarding the output of console.log(); would be "blahh" though, because your function was not run yet.

For more support on variable scope, check out reference.

Hope that helps!

Liam

Are changes made to a global variable, inside a function, reflected globally? Javascript

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