node js get and post request from html page | nodejs tutorials

const express = require('express');

const app = express();

app.use(express.static('public'));

public means

//use method will be use whenever wanna make middlewares im our applications, middlewares will be used before responding requiest (mediator between request and before respond)

//routing ist auth - then controler - in auth is mediatior

// we create a folder called public, inside this we will place a style sheet, javascrpt, fonts, images we will place at public

one seperate directory for images,javascript files, css file that called as scaffolding

npm install express-generator -g

to make public folders

 get api with star

app.get("/*list",(req,res,next) =>

{

let person="department listing"

res.send(person);

}

);

personlist or any thing before list 

api process_get

json stringfy - combine response

app.get("/process_get",(req,res,next) =>

{

response=

{

first_name :req.query.first_name,

last_name :req.query.last_name

};

res.end(JSON.stringify(response));

}

);

post api

let bodyParser = require('body-parser');

var urlencodedParser= bodyParser.urlencoded({ extended: true });

post api needs url encoded and body-parser 

urlencodedParesr - is like middleware

before api

app.post("/process_post",urlencodedParser,

function (req,res)

{

response=

{

first_name :req.body.first_name,

last_name :req.body.last_name

};

res.end(JSON.stringify(response));

}

);

post is from aoi or html form

api get form 

app.get("/form",(req,res,next) =>

{

res.sendFile(__dirname + "/" + "one.html");

}

);

one.html

<form method="POST" action="http://localhost:8081/process_post">

<input type ="text" name="first_name">

<input type ="text" name="last_name">

<input type="submit" name="submit">

</form>

after submit post in above html form 

it will reach process_post

takes taht data from post data and combine as stringify

connect to server

using below 

var server = app.listen(8081,

function () {

var host= server.address().address;

var port= server.address().port;

console.log("listening at http://%s:%s", host,port);

});