52 lines
1.8 KiB
Markdown
52 lines
1.8 KiB
Markdown
---
|
||
id: 587d7fb0367417b2b2512bed
|
||
challengeType: 2
|
||
forumTopicId: 301515
|
||
title: 认识 Node 的控制台
|
||
---
|
||
|
||
## Description
|
||
<section id='description'>
|
||
在开发过程中,能够随时看到代码的运行结果是非常重要的。Node 只是一个 JavaScript 环境。与客户端 JavaScript 一样,你可以使用控制台输出有用的调试信息。在本地计算机上,你可以在终端中输出调试信息。在 Glitch 上,你可以打开屏幕下方的日志。使用 "Logs" 按钮切换日志面板(在左上角,应用名称的下面)。
|
||
我们建议在做这些挑战题时,保持日志面板处于打开状态。通过这些错误日志,你可能会发现这些错误的本质原因。
|
||
</section>
|
||
|
||
## Instructions
|
||
<section id='instructions'>
|
||
|
||
如果还没准备好,请阅读[介绍](/learn/apis-and-microservices/basic-node-and-express/)里面的指引,在 Glitch 里通过这个[链接](https://glitch.com/edit/#!/remix/clone-from-repo?REPO_URL=https://github.com/freeCodeCamp/boilerplate-express/)创建一个新项目。
|
||
|
||
修改 <code>myApp.js</code> 文件,在控制台打印出经典的 "Hello World" 即可。
|
||
|
||
</section>
|
||
|
||
## Tests
|
||
<section id='tests'>
|
||
|
||
```yml
|
||
tests:
|
||
- text: "控制台应该输出:<code>'Hello World'</code>"
|
||
testString: 'getUserInput => $.get(getUserInput(''url'') + ''/_api/hello-console'').then(data => { assert.isTrue(data.passed, ''"Hello World" is not in the server console''); }, xhr => { throw new Error(xhr.responseText); })'
|
||
|
||
```
|
||
|
||
</section>
|
||
|
||
## Challenge Seed
|
||
<section id='challengeSeed'>
|
||
|
||
</section>
|
||
|
||
## Solution
|
||
<section id='solution'>
|
||
|
||
```js
|
||
/**
|
||
Backend challenges don't need solutions,
|
||
because they would need to be tested against a full working project.
|
||
Please check our contributing guidelines to learn more.
|
||
*/
|
||
```
|
||
|
||
</section>
|