Is to disable the global variable in the function that I want.

I would make like Expenssion of Adobe After Effect

example code :

function privateFunction(){
    return window;
}

then normally :

result : Window Object

but I want then :

result : undefined

What should I do?

please help me

I want blocking global variable access in function;

Is to disable the global variable in the function that I want.

I would make like Expenssion of Adobe After Effect

example code :

function privateFunction(){
    return window;
}

then normally :

result : Window Object

but I want then :

result : undefined

What should I do?

please help me

I want blocking global variable access in function;

• javascript
• function
• global

• I'm afraid your question is really unclear. Can you explain a bit more? – T.J. Crowder Commented Aug 21, 2014 at 11:14
• this may help you stackoverflow./questions/12118971/… – V31 Commented Aug 21, 2014 at 11:16
• I want blocking global variable access in function.. – Jeong SangCheol Commented Aug 21, 2014 at 11:18
• Possible copy of : stackoverflow./questions/23177039/….. – CODeeerrrrrrrr Commented Aug 21, 2014 at 11:23

2 Answers 2

Shadow the global variable by a local one:

function privateFunction() {
    var window;
    return window; // not the Window, but undefined now
}

You need to wrap everything in a closure:

    (function() {
        var window = 'foo';
        function privateFunction(){
            return window;
        }
    
        console.log(privateFunction());
    })();