Hello the challenge is to write a create a function between 2 upper and lower numbers e.g(between 1-10 and 2-17 than dis

I originally overlooked the fact that the system had provided a "watch video" button for us in the upper right of the page. The next video should help.

Sometimes, particularly in the early stages, you might need to just forge ahead for a bit to expose yourself to additional examples in the other lessons until you get that "light bulb moment" when things suddenly start to make sense.

Also don't do too much at a time. Those moments can sometimes occur when you're doing something else!

i dont understand your explanation but thanks for trying

Let me see if I can break it down, and using code formatting:

So on this line:

 function randomness(lowernum1-highernum1),(lowernum1-highernum2) {

All the parameters should be in the same set of parentheses, separated by commas (no subtracting here), and I'll guess you didn't mean to use the name "lowernum1" twice, so it might look like this:

 function randomness(lowernum1, highernum1, lowernum2, highernum2) {

Then on the next lines:

  (Math.floor(Math.random() * (num1 - num2) + 1);
  (Math.floor(Math.random() * (num3-num4)+4);

Each line has unmatched parentheses — there are more opens ( than there are closes ) — they must balance out. Also, when you do calculations like these, nothing happens unless you also do something with the result: either store it in a variable, pass it to a function, or "return" it.

Another problem I did not mention the first time is that these names (num1, num2, etc) have not been defined and they are different from the names of the parameters.

Then on the final line:

alert(randomness(2-9),(8-19));

This calls your function but with only one argument, negative seven (-7) resulting from subtracting 9 from 2, and passes the result (which will be "undefined", since the function does not return anything) to "alert". The second argument (negative 11) is ignored because alert only accepts one argument.

Try going on to the next video and look at the code the instructor shows there. The code in the video demonstrates these points and creates a functional sample program.