how to remove property from javascript without loosing it in original object

Question

How to remove property from javascript without loosing it in original object? I mean that I can do like this:

var originalObject = ...;

delete originalObject["Undefined"] and it would remove property originalObject.Undefined, however, I don't want originalObject to be changed. I wish like this:

newObject = removeUndefined(originalObject);

You first need to clone the original object to new and then delete the property from it. — VisioN, Oct 19 '15 at 10:39
Possible duplicate of [What is the most efficient way to clone an object?](http://stackoverflow.com/questions/122102/what-is-the-most-efficient-way-to-clone-an-object) — Typo, Oct 19 '15 at 10:39
@Typo Then you can use that question as a part of your answer or a comment for this question. — VisioN, Oct 19 '15 at 10:43

score 1 · Accepted Answer · edited May 23 '17 at 11:44

From this question you have how to clone the object, as stated in one of the answers "Assuming that you have only variables and not any functions in your object":

you could define:

function removeUndefined(originalObject){

    var newObject = JSON.parse(JSON.stringify(originalObject));
    delete newObject['Undefined'];
    return newObject;
}

So later you could call:

newObject = removeUndefined(originalObject);

how to remove property from javascript without loosing it in original object

1 Answers1