isprime javascript code example
Example 1: javascript find a prime number
function isPrime(num) {
if(num < 2) return false;
for (let k = 2; k < num; k++){
if( num % k == 0){
return false;
}
}
return true;
}
Example 2: prime numbers javascript
function isPrime(num) {
for (let i = 2; i * i <= num; i++)
if (num % i === 0)
return false;
return num > 1;
}
Example 3: javascript find prime number
function test_prime(n){
if (n===1) {
return false;
}else if(n === 2){
return true;
}else{
for(var x = 2; x < n; x++){
if(n % x === 0){
return false;
}
}
return true;
}
}
console.log(test_prime(37));