Node js tutorial step by step 17 EJS Video Lecture | The Complete NodeJS Developer Course (in Hindi) - Back-End Programming

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FAQs on Node js tutorial step by step 17 EJS Video Lecture - The Complete NodeJS Developer Course (in Hindi) - Back-End Programming

1. What is EJS and how is it used in Node.js back-end programming?
Ans. EJS (Embedded JavaScript) is a template engine that allows developers to generate HTML markup with JavaScript. In Node.js back-end programming, EJS is used to dynamically render HTML templates by embedding JavaScript code within the HTML file. This allows for the creation of dynamic web pages and the ability to pass data from the server to the template.
2. How to install EJS in a Node.js project?
Ans. To install EJS in a Node.js project, you can use the npm (Node Package Manager) command: "npm install ejs". This will download and install the EJS package from the npm registry. Make sure to include it as a dependency in your project's package.json file.
3. How to use EJS to render templates in Node.js?
Ans. To use EJS to render templates in Node.js, you first need to set it up as the view engine in your Express application. This can be done by using the following code: ``` app.set('view engine', 'ejs'); ``` Once EJS is set as the view engine, you can render a template by passing the file name and data to the `res.render()` function. For example: ``` app.get('/', function(req, res) { res.render('index', { title: 'My Website' }); }); ``` This will render the "index.ejs" template, passing the data object with the property "title" as a local variable to the template.
4. Can EJS be used to include partial templates in Node.js?
Ans. Yes, EJS allows you to include partial templates in your Node.js application. This can be useful for reusing common elements across multiple pages. To include a partial template, you can use the `<%- include('partial-template') %>` syntax in your EJS file. For example: ``` <%- include('header') %> <h1>Welcome to my website!</h1> <%- include('footer') %> ``` This will include the contents of the "header.ejs" and "footer.ejs" files in the current template.
5. How does EJS handle data binding in Node.js?
Ans. EJS provides a simple way to bind data to HTML templates in Node.js. Inside an EJS template, you can use embedded JavaScript code to access and display the data passed from the server. For example, if you pass an object with a property "name" as data, you can display it in the template using `<%= name %>`. EJS will evaluate this code and replace it with the corresponding value from the data object. This allows for dynamic content generation based on the data received from the server.
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