Whats ist the difference between these two javaScript syntaxes?

Question

Both of them works without errors, is there any difference?

(function(){}());

(function (){})();

here are some working examples:

    console.log(
            (function (a) {return a*2;}(3))
    );

    console.log(
            (function (a) {return a*2;})(3)
    );

No differences, you may also do that aswell: `~function(a){ return a*2; }(3);` these all are auto-executing anynomous functions, you may find even other ways they are written according to the programmer or, occasionally, according to the minifier the programmer used. You may want to either check james's link or this for more cases: https://sarfraznawaz.wordpress.com/2012/01/26/javascript-self-invoking-functions/ — briosheje, Jul 09 '15 at 11:05

Praveen Kumar Purushothaman · Accepted Answer · 2015-07-09T10:59:14.597

0

I guess both are same, only thing is one is wrapped inside parantheses () and the other is not.

(function(){}());

And this is creating and executing it immediately:

(function (){})();

Example for the second case would be:

function sayHello () {
  alert("Hello");
}
sayHello ();

The above is equivalent:

(function () {
  alert("Hello");
})();

Both are the same, it is just the preference of coding style.

edited Jul 09 '15 at 10:59

answered Jul 09 '15 at 10:55

1

`(function(){})();` ist that not the same? – Jul 09 '15 at 10:56
but both of them execute immediately in the js-debugger? – Jul 09 '15 at 10:58
1

@Vienna Sorry, updated the answer. Looks like both are the same. – Praveen Kumar Purushothaman Jul 09 '15 at 10:58
1

@JamesThorpe Updated the answer. Sorry!!! – Praveen Kumar Purushothaman Jul 09 '15 at 10:58
2

delete the answer and give close vote to the question in favor of already existed question. – Bhojendra Rauniyar Jul 09 '15 at 11:11

1 Answers1