Getting started with svelte components

Photo by Jan Huber on Unsplash

Svelte is a javascript framework that has been gaining in popularity lately. It offers several advantages over other frameworks, including smaller file sizes, faster rendering, and more modular code.

Creating your first svelte component is simple. In this post, we’ll go over the basics of creating a component.

What are svelte components and why use them

Svelte components are a wonder of modern technology. By taking your typical JavaScript file and adding a few lines of code, you can create powerful, fast, and lightweight svelte components that are perfect for your website or app. The benefits of using svelte components are numerous, but some of the most notable include the fact that they are generally easier to work with.

How to create a simple svelte component

A svelte component is a piece of self-contained frontend functionality that can be easily reused. The general architecture of a svelte component is simple: it consists of a JavaScript file and an HTML + CSS file, both of which are optional. If present, the JavaScript section contains the logic for the component, while the HTML and CSS define its template. For example, here is a simple svelte component that displays a greeting:

	const name = 'world';

<h1>Hello {name}!</h1>

	/* styles go here */

The HTML file for this component is simply defining a div with an h1 inside of it. The JavaScript file defines a variable named name and assigns it to “world”. When the component is rendered, the value of name is interpolated into the template, resulting in the final output: “Hello, world!”. Svelte components can be more complex than this, but the basic idea is always the same: they are self-contained units of frontend functionality that can be easily reused. With this in mind, creating a svelte component is easy: simply create a JavaScript file and an HTML file, and you’re done!

Svelte and reactivity

Svelte is a component-based JavaScript framework similar to React or Vue. Unlike those frameworks, however, Svelte does not use the Virtual DOM. Instead, it uses a technique called “reactivity” to update the DOM automatically when state variables change. This makes Svelte components very fast and lightweight, as well as easy to write. You can often get away with writing less code in Svelte than in other frameworks! And because Svelte doesn’t use the Virtual DOM, it can also be faster at runtime than other frameworks. So if you’re looking for a fast, lightweight, and easy-to-use framework, Svelte is worth checking out.

Pros and cons of svelte components

svelte components are a controversial topic in the javascript community. Some developers love them for their simplicity and flexibility, while others find them difficult to work with and prefer more traditional frameworks like React or Angular. There is no right or wrong answer when it comes to svelte components, but there are some pros and cons that you should be aware of before deciding whether or not to use them in your project.

One of the biggest advantages of svelte components is that they can help you create very clean and responsive user interfaces. Because they don’t have all the built-in abstractions that other frameworks provide, svelte components force you to think more carefully about how you structure your code. This can result in more well-organized and maintainable codebases. Additionally, svelte components can also be quite fast, due to the way they are compiled down to native javascript at build time.

However, svelte components also have some drawbacks. Because svelte components don’t have as many built-in abstractions, it can be easy to make mistakes that result in hard-to-debug bugs. Also, svelte components can also be difficult to work with when it comes to larger projects. This is because they don’t lend themselves well to modularity and reusability, two of the hallmarks of large-scale software development

Ultimately, whether or not svelte components are right for you will come down to your personal preferences and project requirements. If you’re looking for a simple and lightweight solution, svelte components may be a good option. However, if you need a more robust and feature-rich framework, you may want to consider something else.


In conclusion, svelte components are a simple and lightweight way to create frontend applications. They have several advantages, including speed and clean codebases. However, they also have some drawbacks, such as a lack of built-in abstractions. Ultimately, whether or not svelte components are right for you will come down to your personal preferences and project requirements.

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