🧩 How to Render JSON and HTML in Express JS

💡 Understanding Response Rendering in Express.js

Express allows us to send different types of responses to the client — including HTML and JSON data. Using the res.send() method, we can easily render both.

This feature is useful for building APIs (sending JSON) or creating simple web pages (sending HTML).

We can directly send HTML code inside the res.send() method. Express automatically sets the Content-Type header to text/html.

Let's look at an example that displays an HTML response with links between two routes (/ and /about).

Express can also send JSON data directly using the same res.send() method. If you pass an object or array, Express automatically sets Content-Type to application/json.

Let’s explore examples for both single and multiple JSON objects.