How to clone js object?

Question

How to clone js object with out reference like these:

{ ID: _docEl,
  Index: next,
  DocName: _el
}

Any ideas?

Answer 1

function objToClone(obj){
  return (new Function("return " + obj))
}

Answer 2

You'll have to iterate over the object and make copies of all its properties.

And then if any of its properties are also objects, assuming you want to clone those too, you'll have to recurse into them.

There's various methods for doing this here: What is the most efficient way to clone a JavaScript object?

Answer 3

Here's how I'd do it, based on thomasrutter's suggestion (untested code):

function cloneObj(obj) {
    var clone = {};

    for (var i in obj) {
        if (typeof obj[i] == 'object') {
            clone.i = cloneObj(obj[i]);
        } else {
            clone.i = obj[i];
        }
    }

    return clone;
}