60 lines
1.2 KiB
Markdown
60 lines
1.2 KiB
Markdown
|
---
|
||
|
|
id: cf1111c1c11feddfaeb4bdef
|
||
|
|
title: Subtract One Number from Another with JavaScript
|
||
|
|
challengeType: 1
|
||
|
|
videoUrl: ''
|
||
|
|
localeTitle: 使用JavaScript从另一个数字中减去一个数字
|
||
|
|
---
|
||
|
|
|
||
|
|
## Description
|
||
|
|
<section id="description">我们也可以从另一个数字中减去一个数字。 JavaScript使用<code>-</code>符号进行减法。 <p> <strong>例</strong> </p><blockquote> myVar = 12 - 6; //分配6 </blockquote></section>
|
||
|
|
|
||
|
|
## Instructions
|
||
|
|
<section id="instructions">更改<code>0</code>因此差异为<code>12</code> 。 </section>
|
||
|
|
|
||
|
|
## Tests
|
||
|
|
<section id='tests'>
|
||
|
|
|
||
|
|
```yml
|
||
|
|
tests:
|
||
|
|
- text: ''
|
||
|
|
testString: 'assert(difference === 12, "Make the variable <code>difference</code> equal 12.");'
|
||
|
|
- text: 只从45中减去一个数字。
|
||
|
|
testString: 'assert(/var\s*difference\s*=\s*45\s*-\s*[0-9]*;(?!\s*[a-zA-Z0-9]+)/.test(code),"Only subtract one number from 45.");'
|
||
|
|
|
||
|
|
```
|
||
|
|
|
||
|
|
</section>
|
||
|
|
|
||
|
|
## Challenge Seed
|
||
|
|
<section id='challengeSeed'>
|
||
|
|
|
||
|
|
<div id='js-seed'>
|
||
|
|
|
||
|
|
```js
|
||
|
|
var difference = 45 - 0;
|
||
|
|
|
||
|
|
```
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
### After Test
|
||
|
|
<div id='js-teardown'>
|
||
|
|
|
||
|
|
```js
|
||
|
|
console.info('after the test');
|
||
|
|
```
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
</section>
|
||
|
|
|
||
|
|
## Solution
|
||
|
|
<section id='solution'>
|
||
|
|
|
||
|
|
```js
|
||
|
|
// solution required
|
||
|
|
```
|
||
|
|
</section>
|