Svelte: A new approach to building rich user interfaces

Svelte: A new approach to building rich user interfaces
Photo by Gabriel Heinzer / Unsplash

With the ever increasing complexity of user interfaces, web developers are always looking for ways to write less code while ensuring a smooth and responsive user experience. Enter Svelte, a new approach to building rich user interfaces that is truly revolutionary.

What is Svelte?

Svelte is a JavaScript framework designed to make building user interfaces faster and more efficient. It is a component-based framework that is similar to React, Angular and Vue, but with one key difference: it does not use a virtual DOM, instead relying on reactive data bindings to update the UI without the need for additional code. This means that developers can write less code and create more responsive user interfaces.

Use cases

Svelte is ideal for creating complex user interfaces that need to be highly reactive and dynamic. It is especially well-suited for applications that require frequent user interaction, such as gaming and multimedia applications.

How does Svelte work?

Svelte works by compiling code at build time, instead of runtime. This allows it to create a highly optimized version of the application that is ready to be deployed. Because of this, Svelte applications are much faster and more efficient than those built with other frameworks.

First steps with Svelte

To get started with Svelte, you will need to install the Svelte CLI. Once this is done, you can create a new Svelte project with the command “svelte create”. This will create a new folder with all the necessary files for developing your app.

Having a look at our first Svelte component

Once the project is created, you can open the main.svelte file in the src folder. This is the entry point of your application and contains the code for the first Svelte component. In this file, you can write the logic for your component as well as its styling.

Making a couple of changes

Now that we have our first component in place, let’s make a few changes to it. We can add some text to the component and also change the styling. For example, we can set the background color to a light blue and the text color to white.

Inspecting main.js: the entry point of our app

Now, let’s take a look at the main.js file. This is the entry point of our application and it contains the code that will be executed when the application is launched. In this file, we can define the target element where our Svelte component will be mounted.

A look under the hood

Now that we have our first Svelte component in place, let’s have a look at what it does under the hood. When the application is compiled, the code in the main.svelte file is transpiled into JavaScript. This code is then executed on the browser, and the component is rendered.