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---
id: 5d661bc6e0696bdec46938d9
title: Part 27
challengeType: 0
---
## Description
< section id = 'description' >
There is repetition in the `goTown` and `goStore` functions. When you have repetition in code, it is a sign that you need a new function.
Above the `goTown` function, create an empty function called `update` . This time the function should take a parameter named `location` so data can be passed into the function when it is called.
Here is an example of a function named `testFun` that accepts a parameter named `param` :
```js
function testFun(param) {
console.log(param);
}
```
< / section >
## Instructions
< section id = 'instructions' >
< / section >
## Tests
< section id = 'tests' >
```yml
tests:
- text: See description above for instructions.
testString: assert(update.toString().match(/function update\(\s*location\)\s*\{\s*\}/));
```
< / 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 goTown() {
button1.innerText = "Go to store";
button2.innerText = "Go to cave";
button3.innerText = "Fight dragon";
button1.onclick = goStore;
button2.onclick = goCave;
button3.onclick = fightDragon;
text.innerText = "You are in the town square. You see a sign that says \"Store\".";
}
function goStore() {
button1.innerText = "Buy 10 health (10 gold)";
button2.innerText = "Buy weapon (30 gold)";
button3.innerText = "Go to town square";
button1.onclick = buyHealth;
button2.onclick = buyWeapon;
button3.onclick = goTown;
text.innerText = "You enter the store.";
}
function goCave() {
console.log("Going to cave.");
}
function fightDragon() {
console.log("Fighting dragon.");
}
function buyHealth() {
}
function buyWeapon() {
}
< / 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;
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function update(location) {
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}
function goTown() {
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button1.innerText = "Go to store";
button2.innerText = "Go to cave";
button3.innerText = "Fight dragon";
button1.onclick = goStore;
button2.onclick = goCave;
button3.onclick = fightDragon;
text.innerText = "You are in the town square. You see a sign that says \"Store\".";
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}
function goStore() {
button1.innerText = "Buy 10 health (10 gold)";
button2.innerText = "Buy weapon (30 gold)";
button3.innerText = "Go to town square";
button1.onclick = buyHealth;
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button2.onclick = buyWeapon;
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button3.onclick = goTown;
text.innerText = "You enter the store.";
}
function goCave() {
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console.log("Going to cave.");
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}
function fightDragon() {
console.log("Fighting dragon.");
}
function buyHealth() {
}
function buyWeapon() {
}
< / script >
```
< / section >
