how to use node js with html code example

Example 1: node.js html

const express = require('express');
const app = new express();

app.get('/', function(request, response){
    response.sendFile('absolutePathToYour/htmlPage.html');
});

Example 2: how to use node.js in html file

<!DOCTYPE html>
 
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="utf-8" />
    <title>The Page Returned by Making Http Call to Node.js</title>
    <style type="text/css">
        table, td {
          border:double;
        }
    </style>
</head>
<body>
    <h1>Product Information Page</h1>
    <table>
        <tr>
            <td>Product Id:</td>
            <td>
                <input type="text" />
            </td>
        </tr>
        <tr>
            <td>Product Name:</td>
            <td>
                <input type="text" />
            </td>
        </tr>
        <tr>
            <td></td>
            <td>
                <input type="button"  value="Save"/>
            </td>
        </tr>
    </table>
 
 
</body>
</html>

Example 3: node using html

var http = require('http'),
    fs = require('fs');


fs.readFile('./index.html', function (err, html) {
    if (err) {
        throw err; 
    }       
    http.createServer(function(request, response) {  
        response.writeHeader(200, {"Content-Type": "text/html"});  
        response.write(html);  
        response.end();  
    }).listen(8000);
});