Express of nodejs simple example program

First contact nodejs, You can only study hard , Don't say more first , Code up ：

const express = require('express')

//  Create a server 
const app = express()

//  Listen for client requests 
//  Only the request type of the client is  get, also   Request address is  /  When the root path ,
//  Will call   The handler specified later 
app.get('/', (req, res) => {
  // express  in , It encapsulates better  res.send  Method 
  res.send(' Hello ,express  The server ！')
})

//  Listen to the client post request , And the requested address is  /adduser  When ,
//  Will call the processing function specified later 
app.get('/adduser', (req, res) => {
  console.log(req.query);
  res.status(200).json({result:" Add success "});
})

app.post('/',function(req,res){
	console.log(" Home page  POST  request ");
	res.send('Hello POST');
})

//  Start the server 
app.listen(4444, () => {
  console.log('express server running at http://127.0.0.1:4444')
})

This is a very simple server , We open the browser , Input ：http://127.0.0.1:4444/

 

So if you enter http://127.0.0.1:4444/adduser

Very understandable , Look at the code and see the effect of the actual demonstration , It's not hard to see , There are many good examples and explanations on the Internet , I won't explain more here , After all, I'm also a novice , I also hope that the boss with this knowledge can give me some opinions or suggestions after seeing this .