underscore 8.1 Collections 8.2 Arrays 8.3 Functions 8.4 Objects 8.5 Chaining 9 Node.js 9.1 安装Node.js和npm 9.2 第一个Node程序 9.3 模块 9.4 基本模块 9.4.1 fs 9.4.2 stream 9.4.3 http 9.4.4 buffer 9.5 Web开发 9.5 gitbooks.io/liaoxuefeng/content/js/57.html 9 Node.js - 227 - 本文档使用 书栈(BookStack.CN) 构建 9.1 安装Node.js和npm 由于Node.js平台是在后端运行JavaScript代码，所以，必须首先在本机安装Node环境。 目前Node.js的最新版本是5.3.x。首先，从Node.js官网下载对应平台的安装程序，网速慢的童鞋请 js版本不对，后面章节的代码不保证能正常运行，请重新安装 最新版本。 在正式开始Node.js学习之前，我们先认识一下npm。 npm是什么东东？npm其实是Node.js的包管理工具（package manager）。 安装Node.js和npm 安装Node.js npm 9.1 安装Node.js和npm - 228 - 本文档使用 书栈(BookStack.CN) 构建 为啥我们需要一个包管理工具呢？因为我们在Node

核心观点就是 三个都不错, 根据我们自身的情况与偏好选择了其中⼀个。这个问题讲的太死会引发前端娱乐圈的口水战。 Vue vs React vs Angular npm trends 周下载量 React Vue Angular npm 266 3468 49 6405 180 9886 cnpm 938 1879 397 合计 > 266W 约 50W > 180W Nacos 架构 <

have the following dependencies installed: 1. Node [https://nodejs.org/] version 6.10.1 (will install npm 3.10.10 as well). We recommend using NVM [https://github.com/creationix/nvm] to get the correct version Started notes [https://github.com/gulpjs/gulp/blob/master/docs/getting-started.md] 3. Local dependencies npm install Styles We use Sass [http://sass-lang.com/] for our styles. The files are located within cms/static/cms/sass

have the following dependencies installed: 1. Node [https://nodejs.org/] version 6.10.1 (will install npm 3.10.10 as well). We recommend using NVM [https://github.com/creationix/nvm] to get the correct version Started notes [https://github.com/gulpjs/gulp/blob/master/docs/getting-started.md] 3. Local dependencies npm install Styles We use Sass [http://sass-lang.com/] for our styles. The files are located within cms/static/cms/sass

version 6.10.1 (will install npm 3.10.10 as well). We recommend using NVM to get the correct version of Node. 2. gulp - see Gulp’s Getting Started notes 3. Local dependencies npm install Styles We use Sass

version 6.10.1 (will install npm 3.10.10 as well). We recommend using NVM to get the correct version of Node. 2. gulp - see Gulp’s Getting Started notes 3. Local dependencies npm install Styles We use Sass

and dotenv) for the sample app: npm install Install dependencies to existing project For your existing project, run the following command to install the packages: npm install mysql2 dotenv --save Step Step 4: Run the code and check the result Run the following command to execute the sample code: npm start 227 If the connection is successful, the console will output the version of the TiDB cluster dotenv �→ ) for the sample app: npm install 231 Install dependencies to existing project For your existing project, run the following command to install the packages: npm install mysql dotenv --save

and dotenv) for the sample app: npm install Install dependencies to existing project For your existing project, run the following command to install the packages: npm install mysql2 dotenv --save Step Step 4: Run the code and check the result Run the following command to execute the sample code: npm start 197 If the connection is successful, the console will output the version of the TiDB cluster dotenv �→ ) for the sample app: npm install 201 Install dependencies to existing project For your existing project, run the following command to install the packages: npm install mysql dotenv --save

and dotenv) for the sample app: npm install Install dependencies to existing project For your existing project, run the following command to install the packages: npm install mysql2 dotenv --save Step Step 4: Run the code and check the result Run the following command to execute the sample code: npm start 200 If the connection is successful, the console will output the version of the TiDB cluster dotenv �→ ) for the sample app: npm install 204 Install dependencies to existing project For your existing project, run the following command to install the packages: npm install mysql dotenv --save

and dotenv) for the sample app: npm install Install dependencies to existing project For your existing project, run the following command to install the packages: npm install mysql2 dotenv --save Step Step 4: Run the code and check the result Run the following command to execute the sample code: npm start 222 If the connection is successful, the console will output the version of the TiDB cluster dotenv �→ ) for the sample app: npm install 226 Install dependencies to existing project For your existing project, run the following command to install the packages: npm install mysql dotenv --save