Want a way in which the program prints "is not a prime number" only one time and not many times in loop

Question

function isPrime(n)
{

if (n===1){
document.write("Is not a prime number");
}
else if(n === 2){
document.write("Is a prime number");
}else{
for(var x = 2; x < n; x++)
{
if(n % x === 0)
{
document.write("Is not a prime number");
}
}
document.write("Is a prime number");
}
}

isPrime(10);

Answer 1

You have to set a flag in order to do that.
In the if block delete the print statement and write this instead
Decalre flag = 0 on top
So in,

If(n%x==0){
flag =1;
}
Now come outside of everything
And type this
If (flag ==1)
//Is a prime number
else
//Not a prime number