Getting started with Bun.js
Tags: bunjs, node
Published: 2022-12-08 22:52:37

---
title: Getting started with Bun.js
published: true
description: Bun.js is a powerful JavaScript framework that allows you to easily create dynamic and interactive user interfaces. In this blog post, we will go over some of the basics of using bun.js and how you can get started with it.
tags: bunjs, nodejs, node, bun
cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/d2u5mz25i9f4ll3niut0.png
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# published_at: 2022-12-08 22:45 +0000
---
Bun.js is a powerful JavaScript framework that allows you to easily create dynamic and interactive user interfaces. In this blog post, we will go over some of the basics of using bun.js and how you can get started with it.

First, let's go over what bun.js is and why you might want to use it. Bun.js is a front-end framework that makes it easy to build complex user interfaces using a declarative approach. This means that you can describe what your user interface should look like, and bun.js will take care of the details of rendering it on the page. This is in contrast to imperative approaches, where you have to write code to manually manipulate the elements on the page.

One of the key features of bun.js is its reactive nature. This means that when data changes in your application, the user interface will automatically update to reflect those changes. This can make it much easier to build dynamic and responsive applications, as you don't have to worry about manually updating the user interface whenever the data changes.

Now that you have an idea of what bun.js is and why you might want to use it, let's go over how you can get started with it.

The first step to using bun.js is to include the bun.js library in your HTML page. Most commonly this can be done by adding a `<script>` tag to your page that points to the bun.js library. You can either download the library and include it locally, or use a CDN (Content Delivery Network) to include it in your page.

Once you have included the bun.js library in your page, you can start using it to build your user interface. The first thing you will need to do is create a bun.app object, which will be the root of your user interface. This can be done by calling the `bun.app()` function and passing it a DOM element where you want the user interface to be rendered.

Once you have created a bun.app object, you can start defining the components of your user interface. This is done using the bun.component() function, which allows you to create custom components that you can use to build your user interface. A component is a self-contained piece of the user interface that can be reused in different parts of your application.

To create a component, you simply call the bun.component() function and pass it a name and a function that returns the component's template. The template is a string of HTML that describes the structure of the component. You can use the special bun-bind attribute to bind data to the template, which will cause the user interface to update automatically whenever the data changes.

Once you have created your components, you can use them to build your user interface by using the bun-component attribute on DOM elements in your template. This will tell (bun.js)[https://bun.sh/] to render the specified component in that spot in the user interface.

In addition to components, [bun.js](https://bun.sh/) also provides a number of built-in elements and features that you can use to build your user interface. These include things like bun-if and bun-for attributes for conditional rendering and looping, bun-click for handling user interactions, and much more.

By following these steps, you can get started with [bun.js](https://bun.sh/) and begin building dynamic and interactive user interfaces. With its powerful reactive capabilities and easy-to-use syntax, [bun.js](https://bun.sh/) is a great choice for building modern web applications.