Please can someone explain me this?

Question

function test(number)
{
while(number < 5) {
number++;
}
return number;
}
alert(test(2));

"The output is 5."
I don't get it.

Answer 1

It's a loop i.e while loop
1. while(2<5){
2++;
} after this it again goes to start of the loop until the number is equal to or greater than 5
2. while(3<5){
3++;
}
3. while(4<5){
4++;
}
4. Now we have ans = 5 which doesn't satisfies our condition. So it comes out of the loop and the function returns 5.