Learning JavaScript Data Structures and Algorithms - Third Edition

ES2015 Set class operations

We developed the mathematical operations such as union, intersection, difference, and also subset in our Set class. Unfortunately, the ES2015 native Set class does not contain these functionalities. However, we can write our own functions with similar functionality in case it is needed.

We will use the following two sets in our examples:

const setA = new Set(); 
setA.add(1); 
setA.add(2); 
setA.add(3); 
 
const setB = new Set(); 
setB.add(2); 
setB.add(3); 
setB.add(4);