jiali120 / openWeatherAPI

openWeatherAPI

Using open weather's data to make a search maryland weather's samll app.

users send requst to my server, and then I send request to other server to find the data throug API, and data send back to my server, I response to users browser.

The npm init command is used to create a Node. js project. The npm init command will create a package where the project files will be stored. All the modules you download will be stored in the package.

• https://openweathermap.org/weather-conditions

• api.openweathermap.org/data/2.5/weather?q=Maryland&appid=6e4a87e210348a9ec7182d2d1c7bcc59&units=metric (use postman to make the request link)

1. cd Desktop/
2. mkdir file_name
3. cd file_name/
4. touch name.js
5. touch name.html anotherName.html
6. npm init (The npm init command is used to create a Node. js project. The npm init command will create a package where the project files will be stored. All the modules you download will be stored in the package.)
7. npm install body-parser express request
8. code .
9. start write request and response code in name.js

npm install body-parser express request

• Express is a web application framework of node js. It offers a range of features for building mobile and web applications - from building a single page, to multipages, and an entire hybrid web application.
• Express 是一个简洁而灵活的 node.js Web应用框架, 提供了一系列强大特性帮助你创建各种 Web 应用，和丰富的 HTTP 工具。

*使用 Express 可以快速地搭建一个完整功能的网站。

• Express 框架核心特性：

• 可以设置中间件来响应 HTTP 请求。

• 定义了路由表用于执行不同的 HTTP 请求动作。

• 可以通过向模板传递参数来动态渲染 HTML 页面。

以上命令会将 Express 框架安装在当前目录的 node_modules 目录中， node_modules 目录下会自动创建 express 目录。以下几个重要的模块是需要与 express 框架一起安装的：

• body-parser - node.js 中间件，用于处理 JSON, Raw, Text 和 URL 编码的数据。

• cookie-parser - 这就是一个解析Cookie的工具。通过req.cookies可以取到传过来的cookie，并把它们转成对象。

• multer - node.js 中间件，用于处理 enctype="multipart/form-data"（设置表单的MIME编码）的表单数据。

What is request package npm?

• Request is designed to be the simplest way possible to make http calls. It supports HTTPS and follows redirects by default.

Body-parser parses is an HTTP request body that usually helps when you need to know more than just the URL being hit. Specifically in the context of a POST, PATCH, or PUT HTTP request where the information you want is contained in the body. Using body-parser allows you to access req.

body-parser: node.js body 解析中间件

• 处理程序之前，在中间件中对传入的请求体进行解析（response body）
• body-parser 提供四种解析器
  1. JSON body parser
  2. Raw body parser
  3. Text body parser
  4. URL-encoded form body parser

How do I make a simple node server? Set Up and Run a Simple Node Server Project

1. Go to the NodeJS website and download NodeJS
2. Make sure Node and NPM are installed and their PATHs defined
3. Create a new project folder
4. Start running NPM in your project folder (it runs in the background) . Install any NPM packages we need
5. Create an HTML file in the project folder (this is what the client will see)
6. Create a Node/JavaScript file in the project folder (this is your server file)
7. Run your server
8. Visit your (local) website!

251 git Heroku

• follow git direction and build Procfile first, in the file code ----- web: node name.js

1. git init will initialise a brand new git repository. it is a way of allowing you to save all the different versions of your app or your code.

• git allow you to save each and every time point of your work, and you can roll back any time in the past, you can create experimental branch and mess around with your code

2. git add . add all of our files in this current repository

3. git commit it to commit our changes to this current version, it means we are starting a new version . we also can write git commit -m "First Commit" to give our first or second or thrid... file a name

4. heroku create

5. git push heroku master

6. if change something in the file, we need git add . and git commit agian -m"" and git push heroku master