Clear object memory in javascript

Question

I am using General Interface in my web application and I have javascript classes and methods to create objects for my classes. I would like to clear the memory when the objects are not used. My question is how can I clear the object's memory.

I have tried with 'obj = null;' and 'delete obj;'. Both are not working as expected.

Is there way to clear the object and object memory in JavaScript or in General Interface.

-Sridhar

Javascript already has a garbage collector that clear any unused references in memory. — Fabrizio Calderan, May 18 '12 at 07:59
I think already the question is asked ,check this link below http://stackoverflow.com/questions/5115054/delete-object-from-memory-in-javascript — aravindKrishna, May 18 '12 at 08:02

score 1 · Answer 1 · edited May 18 '12 at 08:04

1

try to set to null.

var a = new className();
alert(a);

a = null;
alert(a);

edited May 18 '12 at 08:04

Sirko

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answered May 18 '12 at 08:03

Sunil Dodiya

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Ikrom · Answer 2 · 2012-05-21T10:24:01.930

1

You can use Self-Invoking Functions

Self-invoking functions are functions who execute immediately, and create their own closure. Take a look at this:

(function () {
    var dog = "German Shepherd";
    alert(dog);
})();
alert(dog); // Returns undefined

so the dog variable was only available within that context

EDIT
If memory leak is related to DOM, here written how to manage it. So, i tried to solve like that:

var obj = {};//your big js object
//do something with it

function clear() {
    var that = this;
    for (var i in that) {
        clear.call(that[i]);
        that[i] = null;
    }
}

clear.call(obj);//clear it's all properties
obj = null;

edited May 21 '12 at 10:24

answered May 18 '12 at 08:17

Ikrom

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I understand these things very well. But I would like to free the memory explicitly. Since, my objects are globally used and the memory has to be cleared when these objects are no needed further. – Sridhar Boganathan May 21 '12 at 07:47

score 0 · Accepted Answer · answered May 21 '12 at 10:26

0

You can't. As long as every reference is really removed (e.g. setting to null as many have suggested), it's entirely up to the GC as to when it'll run and when it'll collect them.

answered May 21 '12 at 10:26

Asherah

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Clear object memory in javascript

3 Answers3