JavaScript Set isDisjointFrom()
Syntax & Examples

Set.isDisjointFrom() method

The isDisjointFrom() method of the Set object in JavaScript takes another set as an argument and returns a boolean indicating if the original set has no elements in common with the given set.

Syntax of Set.isDisjointFrom()

The syntax of Set.isDisjointFrom() method is:

isDisjointFrom(other)

This isDisjointFrom() method of Set takes a set and returns a boolean indicating if this set has no elements in common with the given set.

Parameters

ParameterOptional/RequiredDescription
otherrequiredThe set to compare with the original set.

Return Type

Set.isDisjointFrom() returns value of type boolean.


✐ Examples

1 Using isDisjointFrom() to check if two sets of numbers are disjoint

In JavaScript, we can use the isDisjointFrom() method to check if two sets of numbers have no elements in common.

For example,

  1. Create a new Set object setA with initial values 1, 2, and 3.
  2. Create another Set object setB with initial values 4 and 5.
  3. Use the isDisjointFrom() method to check if setA and setB are disjoint.
  4. Log the result to the console using console.log().

JavaScript Program

const setA = new Set([1, 2, 3]);
const setB = new Set([4, 5]);
const isDisjoint = setA.isDisjointFrom(setB);
console.log(isDisjoint);

Output

true

2 Using isDisjointFrom() to check if two sets with common elements are disjoint

In JavaScript, we can use the isDisjointFrom() method to check if two sets that have common elements are not disjoint.

For example,

  1. Create a new Set object setA with initial values 'apple', 'banana', and 'cherry'.
  2. Create another Set object setB with initial values 'banana' and 'cherry'.
  3. Use the isDisjointFrom() method to check if setA and setB are disjoint.
  4. Log the result to the console using console.log().

JavaScript Program

const setA = new Set(['apple', 'banana', 'cherry']);
const setB = new Set(['banana', 'cherry']);
const isDisjoint = setA.isDisjointFrom(setB);
console.log(isDisjoint);

Output

false

3 Using isDisjointFrom() to check if two sets of objects are disjoint

In JavaScript, we can use the isDisjointFrom() method to check if two sets of objects have no elements in common.

For example,

  1. Create a new Set object setA with initial objects representing different people.
  2. Create another Set object setB with different objects representing different people.
  3. Use the isDisjointFrom() method to check if setA and setB are disjoint.
  4. Log the result to the console using console.log().

JavaScript Program

const person1 = { name: 'John' };
const person2 = { name: 'Jane' };
const person3 = { name: 'Doe' };
const setA = new Set([person1]);
const setB = new Set([person2, person3]);
const isDisjoint = setA.isDisjointFrom(setB);
console.log(isDisjoint);

Output

true

Summary

In this JavaScript tutorial, we learned about isDisjointFrom() method of Set: the syntax and few working examples with output and detailed explanation for each example.