How delete a property of Object without "delete" operation

Question

I need to delete the property of Object. Given an "id", I must delete value[id]. I try this code:

delete value[id];

But the delete operator deletes only a reference, never an object itself.Anyone can suggest me any methods to delete forever a objects property?

you can try setting value[id] to null. this should delete your property — Narendra CM, Jan 13 '16 at 09:48
If `value[id]` is anything else than object, e.g. string, `delete` would delete it. — Michał Perłakowski, Jan 13 '16 at 09:49
Possible duplicate of [Is it possible to delete the object itself, not the reference](http://stackoverflow.com/questions/5097450/is-it-possible-to-delete-the-object-itself-not-the-reference) — Michał Perłakowski, Jan 13 '16 at 09:51

score 0 · Accepted Answer · answered Jan 13 '16 at 09:50

0

JavaScript doesn't allow you to do such a thing, it is garbage collected, this means you have no direct control over what happens in memory. You can only delete a reference. Make sure you delete it anywhere else it is used if you want it gone forever.

answered Jan 13 '16 at 09:50

axelduch

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score 0 · Answer 2 · answered Jan 13 '16 at 09:50

FROM Mozilla

go through the link, it explains it properly..

Main points from the link is added below..

Unlike what common belief suggests, the delete operator has nothing to do with directly freeing memory (it only does indirectly via breaking references. See the memory management page for more details).

If the delete operator succeeds, it removes the property from the object entirely. However, if a property with the same name exists on the object's prototype chain, the object will inherit that property from the prototype.

delete is only effective on an object's properties. It has no effect on variable or function names. While sometimes mis-characterized as global variables, assignments that don't specify an object (e.g. x = 5) are actually property assignments on the global object.

delete can't remove certain properties of predefined objects (like Object, Array, Math etc). These are described in ECMAScript 5 and later as non-configurable.

How delete a property of Object without "delete" operation

2 Answers2