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---
id: 62a8ce73d0dce43468f6689c
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title: Passo 90
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challengeType: 0
dashedName: step-90
---
# --description--
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Você pode inserir variáveis em uma string com o < dfn > operador de concatenação</ dfn > `+` . Atualize o string `You now have a new weapon.` para dizer `You now have a` e o nome da nova arma. Lembre-se de terminar a frase com um ponto.
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Aqui está um exemplo que cria a string `Hello, our name is freeCodeCamp.` :
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```js
const ourName = "freeCodeCamp";
const ourStr = "Hello, our name is " + ourName + ".";
```
# --hints--
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Você deve atualizar a atribuição `text.innerText` para começar com a string `You now have a` .
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```js
assert.match(buyWeapon.toString(), /text\.innerText\s*=\s*('|")You now have a \1/);
```
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Você deve usar o operador de concatenação para adicionar `newWeapon` ao final da string `text.innerText` .
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```js
assert.match(buyWeapon.toString(), /text\.innerText\s*=\s*('|")You now have a \1\s*\+\s*newWeapon/);
```
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Você deve usar o operador de concatenação para finalizar a string `text.innerText` com um `.` .
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```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() {
}
```
