JavaScript Treehouse Club - MASH MASH - JavaScript The Structure of Functions - Part 3 of 3

don't understand the concept here

need help with the challenge and understanding the concept here.


function random_age(age) {
  Math.floor(Math.random() * age;
<!DOCTYPE html>
    <meta charset="utf-8">
    <title>Futuristic MASH</title>
    <link href="normalize.css" rel="stylesheet">
    <link href="style.css" rel="stylesheet">
    <h1 class="logo"><img src="img/mash-logo.svg" /></h1>
    <p class="instructions">Fill in the blanks and your future will be foretold.</p>
    <form action="" method="post" id="mash">
      <div class="choice-bucket">
        <h4 class="highlight">What's your future pet?</h4>
        <input name="pet[]">
        <input name="pet[]">
        <input name="pet[]">
        <input name="pet[]">
      <input type="submit" value="Tell my fortune">

    <script src="script.js"></script>


3 Answers

Steven Parker
Steven Parker
200,763 Points

This one's pretty simple. The instructions say "Call the function by giving an age in the space for a parameter."

So looking at where the function is being called:


The "space for a parameter" is between the parentheses. And an age is just any number. We can assume they mean years.

And technically, they should have said "space for an argument". :wink:

Okay I will see if this works. Thanks Steven!

Argument passing information to the function as in the parentheses you can see (age) so what ever is passed when the function is called is passed to the function. If you enter 5 then age will have value of 5.