JavaScript Program to check a number is prime or not

In this program, You will learn how to check a number is prime or not in JavaScript.

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for(init; condition; increment/decrement){
      //Statement
}

Example: How to check a number is prime or not in JavaScript

let n = parseInt(prompt("Enter a number:"))
let p = 1
if (n == 1) {
  console.log("Number is not prime:" + n)
} else {
  for (i = 2; i < n; i++) {
    if (parseInt(n % i) == 0) {
      p = 0
      break
    }
  }
  if (p == 1) {
    console.log("Number is prime:" + n)
  } else {
    console.log("Number is not prime:" + n)
  }
}

Output:

Enter a number:> 23
Number is prime:23