Trying To Get A Random Number On Button Click

I'm trying to use javascript to get a random number in the range of 0-20 to display in a text box after the user clicks a button, but I am so far unsuccessful. What is the error in

Solution 1:

You function needs to return a value:

functionmakeid() {
    returnMath.floor(Math.random() * 20)
}

Solution 2:

You function does not return a value, which is why the input is being set to undefined.

Try this instead:

functionmakeid() {
    returnMath.floor(Math.random() * 20);
}