week2.2/express

-
The thing the exposes the machine leraning code in server 

// for local machine the code 
import cors from "cors";
import express, { Request, Response } from 'express'
 
const express = require ('express') 
const Port: number = 3000;
const app = express();  
 

app.use(cors());
app.use(express.json())
 
app.get('/', (req, res) => { 
res.send('Hello World!') 
} 
app.listen(port, () => { 
console.log(`Example app listening on port ${port}') 
}) 


// for online machine the code

const express = require ('express') 

const port = 3000 

const app = express();


app.get('/',  function(req, res) { 

res.send('Hello World!') 

} )

app.listen(port)

// Hello world in express

const express = require('express')
const app = express()
const port = 3000

app.get('/', (req, res) => {
  res.send('Hello World!')
})

app.listen(port, () => {
  console.log(`Example app listening on port ${port}`)
})


// This will hellp to run code as port you want or change on runing time
#PORT changing

const express = require('express')
const bodyParser - require("body-parser');
const app = express()
const port = process.env.PORT || 3000
appluse(express.json());

app.post('/backend-api/conversation', function (req, res)  {
const message = req.bbody.message;
console.log(message);
//res.json({
    output: "2+2 = 4"
})
})

app.listen(port, () => {
  console.log(`Example app listening on port ${port}`)
})

code run using this command: export PORT=3005  
 'hit enter and the follow second line code to run'

node index.js


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