The app.render() function is used to render the HTML of a view via the callback function. This function returns the HTML in the callback function.
Syntax:
app.render(view, [locals], callback)
Parameters:
- view: It is the name of the HTML page which is to be rendered.
- locals: It is an optional parameter that is an object containing local variables for the view parameter passed.
- callback: It is a function that is passed as a parameter.
Installation of the express module:
You can visit the link to Install the express module. You can install this package by using this command.
npm install express
After installing the express module, you can check your express version in the command prompt using the command.
npm version express
Create an email.ejs file in the views folder with the following code:
Filename: email.ejs
html
<html>
<head>
<title>Function Demo</title>
</head>
<body>
<h3>Greetings from GeeksforGeeks</h3>
</body>
</html>
|
- Note: You may use any view engine, in this case, we have used ejs.
- After that, you can just create a folder and add a file, for example, index.js. To run this file you need to run the following command.
node index.js
Filename: index.js
javascript
const express = require('express');
const app = express();const PORT = 3000;// View engine setup app.set('view engine', 'ejs');
app.render('email', function (err, html) {
if (err) console.log(err);
console.log(html);
});app.listen(PORT, function (err) {
if (err) console.log("Error in server setup");
console.log("Server listening on Port", PORT);
}); |
Steps to run the program:
Make sure you have installed express and ejs modules using the following command:
npm install express npm install ejs
Run the index.js file using the below command:
node index.js
Output: