Using the set add() method you can add objects to the set in JavaScript. The add() method inserts a new element with a specified value into a Set object.
Set of objects
let s = new Set();
let a = {};
let b = {};
s.add(a);
console.log(s.has(a)); // true
console.log(s.has(b)); // falseJavaScript Set add object
Simple example code.
<!DOCTYPE html>
<html>
<body>
<script>
let mySet = new Set()
let person_obj = {f:"John", l:"Doe", age:25};
mySet.add(person_obj)
console.log(mySet)
</script>
</body>
</html>Output:
Add an array of values to a Set
While Set API is still very minimalistic, you can use Array.prototype.forEach and shorten your code a bit:
array.forEach(item => mySet.add(item))
// alternative, without anonymous arrow function
array.forEach(mySet.add, mySet)Do comment if you have any doubts or suggestions on this Js set topic.
Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.
OS: Windows 10
Code: HTML 5 Version