linux安装nodejs-编程知识

linux安装nodejs

写在前面

因为工作需要，需要使用到nodejs，所以这里简单记录下学习过程。

1：安装

wget https://nodejs.org/dist/v14.17.4/node-v14.17.4-linux-x64.tar.xz
tar xf node-v14.17.4-linux-x64.tar.xz
mkdir /usr/local/lib/node // 这一步骤根据具体的改就行，后面记得改成你本地的
mv node-v14.17.4-linux-x64 /usr/local/lib/node/nodejssudo vim /etc/profile
export NODEJS_HOME=/usr/local/lib/node/nodejs
export PATH=$NODEJS_HOME/bin:$PATHsource /etc/profile

最后查看：

[root@localhost bin]# node -v
v14.17.4
[root@localhost bin]# npm -v
6.14.14

设置淘宝源，加速包下载：

npm config set registry https://registry.npm.taobao.org/
npm install -g cnpm --registry=https://registry.npm.taobao.org
npm config get registry // 查看源

2：测试项目

[root@localhost firstNodeJs]# npm init
This utility will walk you through creating a package.json file.
It only covers the most common items, and tries to guess sensible defaults.See `npm help init` for definitive documentation on these fields
and exactly what they do.Use `npm install <pkg>` afterwards to install a package and
save it as a dependency in the package.json file.Press ^C at any time to quit.
package name: (firstnodejs) 
version: (1.0.0) 
description: 
entry point: (index.js) 
test command: 
git repository: 
keywords: 
author: 
license: (ISC) 
About to write to /root/nodejs/firstNodeJs/package.json:{"name": "firstnodejs","version": "1.0.0","description": "","main": "index.js","scripts": {"test": "echo \"Error: no test specified\" && exit 1"},"author": "","license": "ISC"
}Is this OK? (yes) yes
[root@localhost firstNodeJs]# ls
package.json
[root@localhost firstNodeJs]# ls
package.json
[root@localhost firstNodeJs]# vim hello.js
[root@localhost firstNodeJs]# cat hello.js 
console.log('hello from node');
[root@localhost firstNodeJs]# node hello.js 
hello from node

测试一个http的：

[root@localhost firstNodeJs]# vim myhttp.js
[root@localhost firstNodeJs]# node myhttp.js 
server is running...[root@localhost firstNodeJs]# cat myhttp.js 
const http=require('http');
const server=http.createServer();server.on('request',function(request,response) {response.end("<h1 style='color:red;'>hellooooooooo!!!</h1>");		
})
server.listen(3001,function() {console.info('server is running...');
})