download nodejs code example

Example 1: intall npm

npm install -g npm

Example 2: download file nodejs

const http = require('http');
const fs = require('fs');

const url = 'www.example.com/image.png'; // link to file you want to download
const path = 'app/assets/my_image_name.xlsx' // where to save a file

const request = http.get(url, function(response) {
    if (response.statusCode === 200) {
        var file = fs.createWriteStream(path);
        response.pipe(file);
    }
    request.setTimeout(60000, function() { // if after 60s file not downlaoded, we abort a request 
        request.abort();
    });
});

Example 3: node js server

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 at http://localhost:${port}`))

Example 4: install noedjs

brew install node

Example 5: node js

NodeJs is Runtime environment for executing Js code, Outside Of Browser.
it is build upon Chrome v8 engine using c++.

Uses of Node:

-can build back-end services like API which can be used as backend for 
diferent platform Apps(Website, MobileApp, Desktop App).

-is Asynchronous by default means Single thread handle all the request
and response, thereby providing more speed, highly scalable, built time half 
compare to other tech in market, 33% few line of code, 40% fewer files,
can handle 2times more requests/secs, 35% fast response time.
// Hope you like the short Description.