JSON : simple generate json from string

NODE-JSON

STEP-1 : Download and Install Node.js from the official Node.js web site: https://nodejs.org.

STEP-2 : Create a file – Name : Server.js (Use any name with extension “.js” ).

STEP-3 : Open command prompt  à Specify the server.js path

Like – “ cd Desktop\Node-Server”

STEP-4 :  If multiple version of node installed in PC then –

Command – “nvm use 4.2.4”

Description : nvm stand ‘Node Version Manager’.

STEP-5 : Initialize npm (Node Package Manager)

Command – “npm init”

Description : package.json file is generated, where server.js file is exist.

STEP-6 : Now install npm express.

Command “npm install --save express”

Description : --save means – “Hey, install npm into pacage.json”. express tool is use to build api.

STEP-7 : Now, install npm body-parser.  Body-parser tool is use to parse incoming request and return to json.

Command “ npm install --save body-parser”

Note :  node_module folder is created, where your server.js exist. Inside package.json file, You can see express and body-parser version.

STEP-8 : server.js file

var express = require('express');

var bodyparser = require('body-parser');

var app = express();

app.all('/*', function(req, res, next){

            res.header("Access-Control-Allow-Origin", "*");

            res.header("Access-Control-Allow-Headers", "X-Requested-With", "Content-Type, Accept");

            res.header("Access-Control-Allow-Methods", "POST, GET");

            next();

});

app.use(bodyparser.json());

app.use(bodyparser.urlencoded({extended: false}));

var tutorials = [{

            id:1,

            title: "This is title",

            description: "Data detail shown here",

            image: "Not yet defined"

},

{

            id:2,

            title: "This is title2",

            description: "Data detail shown here2",

            image: "Not yet defined2"

}];

app.get('/tutorials', function(req, res){

            console.log("GET from server");

            res.send(tutorials);

});

app.listen(8080);

STEP-9 : Now, run it in browser.

Like-  http://localhost:8080/tutorials

Output :  [{"id":1,"title":"This is title","description":"Data detail shown here","image":"Not yet defined"},{"id":2,"title":"This is title2","description":"Data detail shown here2","image":"Not yet defined2"}]

STEP-10 :  Your srver available globally not for your project.

Command “npm install –g nodemon”

STEP-11 :  Restart server

Command “ nodemon server.js”