Keeping only certain properties in a JavaScript object

Question

I have an object. I would like to modify the object (not clone it) by removing all properties except for certain specific properties. For instance, if I started with this o

Answer 1

Lodash has a function called pick which does what you're describing. I know that including a library isn't ideal, but you can also cherry-pick functions when using bundles, etc.

var myObj={
    p1:123,
    p2:321,
    p3:{p3_1:1231,p3_2:342},
    p4:'23423',
    //....
    p99:{p99_1:'sadf',p99_2:234},
    p100:3434
}

var newObj = _.pick(myObj, 'p1', 'p2', 'p100')