freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript-rpg-game/part-020.md

---
id: 5d65f6392012114c7d7c57ed
title: Part 20
challengeType: 0
---

## Description
<section id='description'>

When a player clicks the 'Go to store' button, the buttons and text in the game should change.
Remove the code inside the `goStore` function. Add a new line of code inside the function that updates the text of `button1` so that it says "Buy 10 health (10 gold)".

For example, this code updates the text of `button` to say "Click Me": `button.innerText = "Click Me";`.

</section>

## Instructions
<section id='instructions'>

</section>

## Tests
<section id='tests'>

```yml
tests:
  - text: See description above for instructions.
    # testString: assert(goStore.toString().match(/button1\.innerText\s*\=\s*[\'\"\`]Buy 10 health \(10 gold\)\.?[\'\"\`]/));
    testString: assert((() => { goStore(); return button1.innerText === "Buy 10 health (10 gold)" })());

```

</section>

## Challenge Seed
<section id='challengeSeed'>

<div id='html-seed'>

```html
<script>
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 monsterNameText = document.querySelector("#monsterName");
const monsterHealthText = document.querySelector("#monsterHealth");

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

function goStore() {
  console.log("Going to store.");
}

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

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

</script>
```

</div>


### Before Test
<div id='html-setup'>

```html
<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">
  <title>RPG - Dragon Repeller</title>
  <style>
    body {
      background-color: darkblue;
    }
    #text {
      background-color: black;
      color: white;
      padding: 10px;
    }
    #game {
      max-width: 500px;
      max-height: 400px;
      background-color: lightgray;
      color: white;
      margin: 0 auto;
      padding: 10px;
    }
    #controls {
      border: 1px black solid;
      padding: 5px;
    }
    #stats {
      border: 1px black solid;
      color: black;
      padding: 5px;
    }
    #monsterStats {
      display: none;
      border: 1px black solid;
      color: white;
      padding: 5px;
      background-color: red;
    }
    .stat {
      padding-right: 10px;
    }
  </style>
</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>
```

</div>


### After Test
<div id='html-teardown'>

```html
</body>
</html>
```

</div>


</section>

## Solution
<section id='solution'>


```html
<script>
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 monsterNameText = document.querySelector("#monsterName");
const monsterHealthText = document.querySelector("#monsterHealth");

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

function goStore() {
  button1.innerText = "Buy 10 health (10 gold)";
}

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

function fightDragon() {
  console.log("Fighting dragon.");
}
</script>
```

</section>
feat: JS RPG game tests (#37678) * feat: Add JavaScript RPG Game for testing 2019-11-05 10:56:32 +09:00			`---`
			`id: 5d65f6392012114c7d7c57ed`
			`title: Part 20`
			`challengeType: 0`
			`---`

			`## Description`
			`<section id='description'>`

			`When a player clicks the 'Go to store' button, the buttons and text in the game should change.`
			Remove the code inside the `goStore` function. Add a new line of code inside the function that updates the text of `button1` so that it says "Buy 10 health (10 gold)".

			For example, this code updates the text of `button` to say "Click Me": `button.innerText = "Click Me";`.

			`</section>`

			`## Instructions`
			`<section id='instructions'>`

			`</section>`

			`## Tests`
			`<section id='tests'>`

			```yml
			`tests:`
			`- text: See description above for instructions.`
			# testString: assert(goStore.toString().match(/button1\.innerText\s\=\s[\'\"\`]Buy 10 health \(10 gold\)\.?[\'\"\`]/));
			`testString: assert((() => { goStore(); return button1.innerText === "Buy 10 health (10 gold)" })());`

			```

			`</section>`

			`## Challenge Seed`
			`<section id='challengeSeed'>`

			`<div id='html-seed'>`

			```html
			`<script>`
			`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 monsterNameText = document.querySelector("#monsterName");`
			`const monsterHealthText = document.querySelector("#monsterHealth");`

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

			`function goStore() {`
			`console.log("Going to store.");`
			`}`

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

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

			`</script>`
			```

			`</div>`


			`### Before Test`
			`<div id='html-setup'>`

			```html
			`<!DOCTYPE html>`
			`<html lang="en" >`
			`<head>`
			`<meta charset="UTF-8">`
			`<title>RPG - Dragon Repeller</title>`
			`<style>`
			`body {`
			`background-color: darkblue;`
			`}`
			`#text {`
			`background-color: black;`
			`color: white;`
			`padding: 10px;`
			`}`
			`#game {`
			`max-width: 500px;`
			`max-height: 400px;`
			`background-color: lightgray;`
			`color: white;`
			`margin: 0 auto;`
			`padding: 10px;`
			`}`
			`#controls {`
			`border: 1px black solid;`
			`padding: 5px;`
			`}`
			`#stats {`
			`border: 1px black solid;`
			`color: black;`
			`padding: 5px;`
			`}`
			`#monsterStats {`
			`display: none;`
			`border: 1px black solid;`
			`color: white;`
			`padding: 5px;`
			`background-color: red;`
			`}`
			`.stat {`
			`padding-right: 10px;`
			`}`
			`</style>`
			`</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>`
			```

			`</div>`


			`### After Test`
			`<div id='html-teardown'>`

			```html
			`</body>`
			`</html>`
			```

			`</div>`


			`</section>`

			`## Solution`
			`<section id='solution'>`


			```html
			`<script>`
			`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 monsterNameText = document.querySelector("#monsterName");`
			`const monsterHealthText = document.querySelector("#monsterHealth");`

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

			`function goStore() {`
fix: basic js rpg spacing and tests Replaced tabs with spaces so spacing is consistent in the monaco editor. Also adjust some tests to account for the new loop protection. 2020-01-29 15:13:18 +09:00			`button1.innerText = "Buy 10 health (10 gold)";`
feat: JS RPG game tests (#37678) * feat: Add JavaScript RPG Game for testing 2019-11-05 10:56:32 +09:00			`}`

			`function goCave() {`
fix: basic js rpg spacing and tests Replaced tabs with spaces so spacing is consistent in the monaco editor. Also adjust some tests to account for the new loop protection. 2020-01-29 15:13:18 +09:00			`console.log("Going to cave.");`
feat: JS RPG game tests (#37678) * feat: Add JavaScript RPG Game for testing 2019-11-05 10:56:32 +09:00			`}`

			`function fightDragon() {`
			`console.log("Fighting dragon.");`
			`}`
			`</script>`
			```

			`</section>`