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JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops What are Loops?

Colin Sygiel
Colin Sygiel
5,249 Points
Posted by Colin Sygiel
Colin Sygiel
5,249 Points

Do we need to store the function in a variable? I was able to complete this by writing the function to the page directly

function randomNumber(upper) {
return Math.floor( Math.random() * upper ) + 1;
}

var counter = 0;
while (counter < 100) {
document.write(randomNumber(10));
counter += 1;
}

1 Answer

Sebastian Karg
Sebastian Karg
28,705 Points
Sebastian Karg
Sebastian Karg
28,705 Points

Hi Colin,

your example is working, but there are some reasons why it is best practise to store the function in a variable.

  1. There is no possibility to add a space between the numbers to separate them or concatenate it to a string.
  2. Thinking of doing something else with your random number instead of only printing it out, like doing some math everytime your loop is running, it's easier to handel when stored inside a variable.
Colin Sygiel
Colin Sygiel
5,249 Points
Colin Sygiel
Colin Sygiel
5,249 Points

Excellent! Thanks for the tips, Sebastian :)