how to create node js code example
Example 1: create node in javascript
<div id="div1">
<p id="p1">This is a paragraph.</p>
<p id="p2">This is another paragraph.</p>
</div>
<script>
var para = document.createElement("p");
var node = document.createTextNode("This is new.");
para.appendChild(node);
var element = document.getElementById("div1");
element.appendChild(para);
</script>
Example 2: create node project
#1. server.js
var express = require('express');
var app = express();
app.get('/', function (req, res) {
res.status(200).send('Hello World!');
});
var port = process.env.PORT || 3000;
var server = app.listen(port, function() {
console.log('Express server listening on port ' + port);
});
open cmd run server.js
"node server.js"
log:Express server listening on port 3000
& then
open link "http://localhost:3000/" in your browser and show result.
Example 3: node app create
using command line >>>
npm init
open text editor create a js file. for example like index.js and paste following code.
>>>
const http = require('http');
const hostname = '127.0.0.1';
const port = 3000;
const server = http.createServer((req, res) => {
res.statusCode = 200;
res.setHeader('Content-Type', 'text/plain');
res.end('Hello World');
});
server.listen(port, hostname, () => {
console.log(`Server running at http://${hostname}:${port}/`);
});
----
run using
node app.js
Example 4: javascript running at node
const inNode = new Function('try{return this===global;}catch(err){return false;}')();