JavaScript Application To Check Prime and NonPrime Number (original) (raw)

Last Updated : 17 Mar, 2026

A simple JavaScript application can be created to check whether a number is prime or non-prime by using logical conditions and loops. It helps beginners understand number properties and basic programming concepts.

• A prime number is a number greater than 1 that has no divisors other than 1 and itself.
• The program uses a loop to check divisibility up to the square root of the number for efficiency.

Approach

We will create a simple web application where users can input a number to check if it’s a Prime or Non-Prime number. The application will:

• Accept a number as input from the user.
• Check whether the number is prime or non-prime.
• Display the result to the user.

Project Preview

JavaScript Application To Check Prime and Non-Prime Number

Prime and Non-Prime Number - HTML & CSS Structure

This structure provides a simple web interface with an input field to enter a number and a button to check whether the number is prime or non-prime

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