---
id: cf1111c1c11feddfaeb3bdef
title: Add Two Numbers with JavaScript
challengeType: 1
videoUrl: ''
localeTitle: 使用JavaScript添加两个数字
---

## Description
<section id="description"> <code>Number</code>是JavaScript中的数据类型，表示数字数据。现在让我们尝试使用JavaScript添加两个数字。当放置在两个数字之间时，JavaScript使用<code>+</code>符号作为加法运算。 <strong>例</strong> <blockquote> myVar = 5 + 10; //分配15 </blockquote></section>

## Instructions
<section id="instructions">更改<code>0</code>使总和等于<code>20</code> 。 </section>

## Tests
<section id='tests'>

```yml
tests:
  - text: <code>sum</code>应该等于<code>20</code>
    testString: 'assert(sum === 20, "<code>sum</code> should equal <code>20</code>");'
  - text: 使用<code>+</code>运算符
    testString: 'assert(/\+/.test(code), "Use the <code>+</code> operator");'

```

</section>

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

<div id='js-seed'>

```js
var sum = 10 + 0;

```

</div>


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

```js
console.info('after the test');
```

</div>

</section>

## Solution
<section id='solution'>

```js
// solution required
```
</section>