Enclosing parentheses in JavaScript

Question

Could I get an explanation of the follow code snippet?

(function()
{
    alert();
})();

This looks like an anonymous function and the alert() function gets executed. I don't understand the semantic meaning of the outer parentheses. What does this part of the snippet mean?

(


 )()

I think the question is saying "Why not `function() {alert(1);}();`, but `+function() {alert(1);}();` or `(function() {alert(1);})();`?". However the answer is already on _Stack Overflow_. — Константин Ван, Sep 02 '17 at 08:51

score -2 · Accepted Answer · answered Sep 02 '17 at 08:50

-2

this represents the immediately executable function. in easier way, it means that function being declared and called/executed simultaneously.

answered Sep 02 '17 at 08:50

Arpit Arya

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Enclosing parentheses in JavaScript

1 Answers1