Ndtyjky

Given the following object {a:1, b:2, c:3} I'm looking for es6 syntax to distruct a subset of the object to a new one i.e: {b:2 ,c:3}.

I've found this syntax enabling me to omit the properties I don't want:
const {a,...newObj} = original.

How can I do it, with including the properties names.

You can cherry pick the properties you want like shown below. The name of the new variable should be same as the property name. Then you can create a new object containing those picked properties.

var obj = {a:1, b:2, c:3};

var {b, c} = obj;//pick property b and c

var newObj = {b, c}; //shortcut for {b:b, c:c} in ES-6

console.log(newObj);

I prefer doing the following

( ({key1, key2}) => ({ key1, key2 }) )(obj);

It allows me getting a new object without creating intermediate variables or objects.

For example -

var obj = {a:1, b:2, c:3};

var newObj = ( ({a, b}) => ({ a, b }) )(obj);

console.log(newObj);

I'm not sure what you really want. But as far as I understood this will help you.

For example

I have the initial object

{ a: 10, b: 20, c: 100 }

Properties I want to extract are a, b

And I want to create new object c with property b, c

Here is how it is done. Using destructive assignment. Here the out put will be 20 as in the initial object.

({ a, b } = { a: 10, b: 20, c: 100 });

let c = {a: a, b: b};

console.log(c.b);

MDN Document to destructive assignment. link