Javascript Set constructor

Introduction

The Javascript Set constructor can create Set objects.

It can create set from unique values of any types. 

new Set([iterable])
  • iterable - Optional, iterable object to convert to Set
let set1 = new Set();

set1.add(1);/* w w  w  .  j  a v  a  2  s. c o m*/
set1.add(2);
set1.add(3);

console.log(set1);

let a = [1, 2, 3, 4];
console.log(a);


let mySet = new Set(a)
console.log(mySet);
console.log(mySet.size);



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