66 lines
1.7 KiB
Markdown
66 lines
1.7 KiB
Markdown
|
---
|
||
|
|
id: 56533eb9ac21ba0edf2244b9
|
||
|
|
title: Constructing Strings with Variables
|
||
|
|
challengeType: 1
|
||
|
|
videoUrl: ''
|
||
|
|
localeTitle: 用变量构造字符串
|
||
|
|
---
|
||
|
|
|
||
|
|
## Description
|
||
|
|
<section id="description">有时您需要构建一个字符串， <a href="https://en.wikipedia.org/wiki/Mad_Libs" target="_blank">Mad Libs</a>样式。通过使用连接运算符（ <code>+</code> ），您可以将一个或多个变量插入到正在构建的字符串中。 </section>
|
||
|
|
|
||
|
|
## Instructions
|
||
|
|
<section id="instructions">将<code>myName</code>设置为等于您的名字的字符串，并在字符串<code>"My name is "</code>和<code>" and I am well!"</code>之间用<code>myName</code>构建<code>myStr</code> <code>" and I am well!"</code> </section>
|
||
|
|
|
||
|
|
## Tests
|
||
|
|
<section id='tests'>
|
||
|
|
|
||
|
|
```yml
|
||
|
|
tests:
|
||
|
|
- text: <code>myName</code>应设置为至少3个字符长的字符串
|
||
|
|
testString: 'assert(typeof myName !== "undefined" && myName.length > 2, "<code>myName</code> should be set to a string at least 3 characters long");'
|
||
|
|
- text: 使用两个<code>+</code>运算符在其中构建<code>myStr</code> with <code>myName</code>
|
||
|
|
testString: 'assert(code.match(/[""]\s*\+\s*myName\s*\+\s*[""]/g).length > 0, "Use two <code>+</code> operators to build <code>myStr</code> with <code>myName</code> inside it");'
|
||
|
|
|
||
|
|
```
|
||
|
|
|
||
|
|
</section>
|
||
|
|
|
||
|
|
## Challenge Seed
|
||
|
|
<section id='challengeSeed'>
|
||
|
|
|
||
|
|
<div id='js-seed'>
|
||
|
|
|
||
|
|
```js
|
||
|
|
// Example
|
||
|
|
var ourName = "freeCodeCamp";
|
||
|
|
var ourStr = "Hello, our name is " + ourName + ", how are you?";
|
||
|
|
|
||
|
|
// Only change code below this line
|
||
|
|
var myName;
|
||
|
|
var myStr;
|
||
|
|
|
||
|
|
```
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
### After Test
|
||
|
|
<div id='js-teardown'>
|
||
|
|
|
||
|
|
```js
|
||
|
|
console.info('after the test');
|
||
|
|
```
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
</section>
|
||
|
|
|
||
|
|
## Solution
|
||
|
|
<section id='solution'>
|
||
|
|
|
||
|
|
```js
|
||
|
|
// solution required
|
||
|
|
```
|
||
|
|
</section>
|