Question

I have to create a while loop displaying the integers from 1-20 but only 5 integers per line.
I can’t get the 5 integers per line part. What is the best way to do that?

Answer 1

Here’s a solution that builds a string and displays an alert box with the result.

var i = 0, result = "";

while (i++ < 20) {
    result += i + " ";

    // check to see if we're at 5/10/15/20 to add a new-line
    if (i % 5 === 0) {
        result += "\n";
    }
}

alert(result);

jsFiddle to test: http://jsfiddle.net/willslab/KUVkX/3/