If I have an object like so:

const obj  = { A: 1, B: 2, C: 3, D: 4 };

How can I copy all key/values except for C to a new object?

Underscore has the _.pick() functionality, but I am looking to do the opposite.

If I have an object like so:

const obj  = { A: 1, B: 2, C: 3, D: 4 };

How can I copy all key/values except for C to a new object?

Underscore has the _.pick() functionality, but I am looking to do the opposite.

• javascript
• node.js
• lodash

• possible duplicate stackoverflow.com/questions/34698905/… – Dinesh undefined Commented Jun 6, 2017 at 16:48
• Possible duplicate of clone a js object except for one key – Dinesh undefined Commented Jun 6, 2017 at 16:48
• thanks for editing the question, much better now – Alexander Mills Commented Jun 6, 2017 at 18:20

2 Answers 2

You can achieve this with the omit method : https://lodash.com/docs/4.17.4#omit

You can do this with the ES object rest/spread proposal. Since it's a stage 4 proposal, and not supported by all browser, you might need to transpile the code using babel with the Object rest spread transform.

const obj  = { A: 1, B: 2, C: 3, D: 4 };

const { C, ...objWithoutC } = obj;

console.log(objWithoutC);