Object destructuring

We can use destructuring assignment for objects also.

Syntax:
let {var1, var2} = {var1:…, var2:…}

Right side is an existing object which that we want to split into variables. Left side is our pattern to split variables.

Basic Example I:

let options = {
  title: "MasterPage",
  width: 100,
  height: 200
};

let {title, width, height} = options;

alert(title);  // MasterPage
alert(width);  // 100
alert(height); // 200

Internally its uses like , options.title, options.width and options.height. Hope you got it.
and order does not matter here. Anywhere it will work.

Example II:

let options = {
  title: "MasterPage",
  height: 200,
  width: 100
};

let {title, width, height} = options;

alert(title);  // MasterPage
alert(width);  // 100
alert(height); // 200

Above order was changed, still its working perfectly.

Rest Operator:

Below we have used Rest operator with object. So other than title, remaining will come under rest. See below code.

let options = {
  title: "MasterPage",
  height: 200,
  width: 100
};

let {title, ...rest} = options;

// now title="MasterPage", rest={height: 200, width: 100}
alert(rest.height);  // 200
alert(rest.width);   // 100