Learn Basic JavaScript by Building a Role Playing Game - Step 68

Tell us what’s happening:

Why are we using “location” before our arrays in our update function? Shouldn’t we be referencing the const “locations”? Can someone please explain this? “location” doesn’t mean anything to me, I don’t see it defined anywhere…

Your code so far

<!-- file: index.html -->
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <link rel="stylesheet" href="./styles.css">
    <title>RPG - Dragon Repeller</title>
  </head>
  <body>
    <div id="game">
      <div id="stats">
        <span class="stat">XP: <strong><span id="xpText">0</span></strong></span>
        <span class="stat">Health: <strong><span id="healthText">100</span></strong></span>
        <span class="stat">Gold: <strong><span id="goldText">50</span></strong></span>
      </div>
      <div id="controls">
        <button id="button1">Go to store</button>
        <button id="button2">Go to cave</button>
        <button id="button3">Fight dragon</button>
      </div>
      <div id="monsterStats">
        <span class="stat">Monster Name: <strong><span id="monsterName"></span></strong></span>
        <span class="stat">Health: <strong><span id="monsterHealth"></span></strong></span>
      </div>
      <div id="text">
        Welcome to Dragon Repeller. You must defeat the dragon that is preventing people from leaving the town. You are in the town square. Where do you want to go? Use the buttons above.
      </div>
    </div>
    <script src="./script.js"></script>
  </body>
</html>
/* file: styles.css */
body {
  background-color: #0a0a23;
}

#text {
  background-color: #0a0a23;
  color: #ffffff;
  padding: 10px;
}

#game {
  max-width: 500px;
  max-height: 400px;
  background-color: #ffffff;
  color: #ffffff;
  margin: 30px auto 0px;
  padding: 10px;
}

#controls,
#stats {
  border: 1px solid #0a0a23;
  padding: 5px;
  color: #0a0a23;
}

#monsterStats {
  display: none;
  border: 1px solid #0a0a23;
  padding: 5px;
  color: #ffffff;
  background-color: #c70d0d;
}

.stat {
  padding-right: 10px;
}

button {
  cursor: pointer;
  color: #0a0a23;
  background-color: #feac32;
  background-image: linear-gradient(#fecc4c, #ffac33);
  border: 3px solid #feac32;
}
/* file: script.js */
let xp = 0;
let health = 100;
let gold = 50;
let currentWeapon = 0;
let fighting;
let monsterHealth;
let inventory = ["stick"];

const button1 = document.querySelector('#button1');
const button2 = document.querySelector("#button2");
const button3 = document.querySelector("#button3");
const text = document.querySelector("#text");
const xpText = document.querySelector("#xpText");
const healthText = document.querySelector("#healthText");
const goldText = document.querySelector("#goldText");
const monsterStats = document.querySelector("#monsterStats");
const monsterName = document.querySelector("#monsterName");
const monsterHealthText = document.querySelector("#monsterHealth");
const locations = [
  {
    name: "town square",
    "button text": ["Go to store", "Go to cave", "Fight dragon"],
    "button functions": [goStore, goCave, fightDragon],
    text: "You are in the town square. You see a sign that says \"Store\"."
  },
  {
    name: "store",
    "button text": ["Buy 10 health (10 gold)", "Buy weapon (30 gold)", "Go to town square"],
    "button functions": [buyHealth, buyWeapon, goTown],
    text: "You enter the store."
  }
];

// initialize buttons
button1.onclick = goStore;
button2.onclick = goCave;
button3.onclick = fightDragon;


// User Editable Region

function update(location) {
  button1.innerText = location["button text"][0];
  button2.innerText = location["button text"][1];
  button3.innerText = location["button text"][2];
  button1.onclick = location["button functions"][0];
  button2.onclick = location["button functions"][1];
  button3.onclick = location["button functions"][2];
  text.innerText = locations.text;
}

// User Editable Region


function goTown() {
  update(locations[0]);
}

function goStore() {

}

function goCave() {
  console.log("Going to cave.");
}

function fightDragon() {
  console.log("Fighting dragon.");
}

function buyHealth() {

}

function buyWeapon() {

}

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Challenge Information:

Learn Basic JavaScript by Building a Role Playing Game - Step 68

location is declared here as a function parameter

but location doesn’t mean anything? like nothing is defined? As opposed to locations, aren’t we pulling those arrays from locations?

No, location does mean something very specific. location is a function argument. It has the value that is passed to the function when the function is called.