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---
id: 62a8ce73d0dce43468f6689c
title: Step 90
challengeType: 0
dashedName: step-90
---
# --description--
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You can insert variables into a string with the < dfn > concatenation operator</ dfn > `+` . Update the `You now have a new weapon.` string to say `You now have a` and the name of the new weapon. Remember to end the sentence with a period.
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Here is an example that creates the string `Hello, our name is freeCodeCamp.` :
```js
const ourName = "freeCodeCamp";
const ourStr = "Hello, our name is " + ourName + ".";
```
# --hints--
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You should update the `text.innerText` assignment to start with the string `You now have a` .
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```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
<!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 >
```
```css
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, #stats {
border: 1px solid black;
padding: 5px;
color: black;
}
#monsterStats {
display: none;
border: 1px solid black;
padding: 5px;
color: white;
background-color: red;
}
.stat {
padding-right: 10px;
}
```
```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 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;
currentWeapon++;
goldText.innerText = gold;
let newWeapon = weapons[currentWeapon].name;
text.innerText = "You now have a new weapon.";
}
}
--fcc-editable-region--
function fightSlime() {
}
function fightBeast() {
}
```
