---
id: 62a8ce73d0dce43468f6689c
title: Step 90
challengeType: 0
dashedName: step-90
---
# --description--
In the previous project, you learned how to work with the concatenation operator to insert variables into a string like this:
```js
const organization = "freeCodeCamp";
// "Hello, our name is freeCodeCamp."
"Hello, our name is " + organization + ".";
```
Update the string `"You now have a new weapon."` to `"You now have a "` followed by the name of the new weapon, and remember to end the sentence with a period.
# --hints--
You should update the `text.innerText` assignment to start with the string `"You now have a "`.
```js
assert.match(buyWeapon.toString(), /text\.innerText\s*=\s*('|")You now have a \1/);
```
You should use the concatenation operator to add `newWeapon` to the end of the `text.innerText` string.
```js
assert.match(buyWeapon.toString(), /text\.innerText\s*=\s*('|")You now have a \1\s*\+\s*newWeapon/);
```
You should use the concatenation operator to end your `text.innerText` string with a `.`.
```js
assert.match(buyWeapon.toString(), /text\.innerText\s*=\s*('|")You now have a \1\s*\+\s*newWeapon\s*\+\s*('|")\.\2/);
```
# --seed--
## --seed-contents--
```html
RPG - Dragon Repeller
XP: 0Health: 100Gold: 50
Monster Name: Health:
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.
```
```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;
}
```
```js
let xp = 0;
let health = 100;
let gold = 50;
let currentWeaponIndex = 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 weapons = [
{ name: 'stick', power: 5 },
{ name: 'dagger', power: 30 },
{ name: 'claw hammer', power: 50 },
{ name: 'sword', power: 100 }
];
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."
},
{
name: "cave",
"button text": ["Fight slime", "Fight fanged beast", "Go to town square"],
"button functions": [fightSlime, fightBeast, goTown],
text: "You enter the cave. You see some monsters."
}
];
// initialize buttons
button1.onclick = goStore;
button2.onclick = goCave;
button3.onclick = fightDragon;
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 = location.text;
}
function goTown() {
update(locations[0]);
}
function goStore() {
update(locations[1]);
}
function goCave() {
update(locations[2]);
}
function fightDragon() {
console.log("Fighting dragon.");
}
function buyHealth() {
if (gold >= 10) {
gold -= 10;
health += 10;
goldText.innerText = gold;
healthText.innerText = health;
} else {
text.innerText = "You do not have enough gold to buy health.";
}
}
--fcc-editable-region--
function buyWeapon() {
if (gold >= 30) {
gold -= 30;
currentWeaponIndex++;
goldText.innerText = gold;
let newWeapon = weapons[currentWeaponIndex].name;
text.innerText = "You now have a new weapon.";
}
}
--fcc-editable-region--
function fightSlime() {
}
function fightBeast() {
}
```