JSFiddle - React, Tailwind, and code Playground

by btipling

JavaScript

var set = new Set(["a", "a","e", "b", "c", "b", "b", "b", "d"]);

console.log(set.size); //Logs 5

console.log(set.has("a")); //Logs true

console.log(set.delete("a")); //Logs true, was deleted

console.log(set.has("a")); //Logs false

console.log(set.delete("a")); //Logs false, wasn't deleted, wasn't there.

set.forEach(function (value, key, setObj) {
    console.log(value, key, key === value, set === setObj);
});

set.clear();

console.log(set.size); //Logs 0