Default values when destructuring objects in JavaScript

You can also specify default values when destructuring objects. In this case, unlike array destructuring, any variable can be optional - not necessarily from the end of the array. Let's, for example, specify a default value for the variable year:

javascriptlet obj = {
  month: 12,
  day:   31,
};

let {year = 2025, month, day} = obj;

console.log(year);  // shows 2025
console.log(month); // shows 1
console.log(day);   // shows 31

javascriptlet options = {
  width:  400,
  height: 500,
};

let color;
if (options.color !== undefined) {
  color = options.color;
} else {
  color = 'black';
}

let width  = options.width;
let height = options.height;