First-class IDE support (code-completion, linting, etc.) and tooling for production (localization, template minification, etc.) are readily available. Lit doesn’t require compilation or building during development, so it can be used virtually tool-free if you prefer. Lit works great in vanilla JavaScript, or you can use TypeScript for even better ergonomics by using decorators and type declarations.Styles are scoped by default, keeping your CSS selectors simple and ensuring that your component’s styling won’t pollute (or be polluted by) the surrounding context.Reactive properties represent a component’s public API and/or internal state your component automatically re-renders whenever a reactive property changes. Lit’s expressive, declarative templates (utilizing JavaScript tagged template literals) make it easy to describe how a component should be rendered.You extend from it to define your own components. Lit's main feature is the LitElement base class, a convenient and versatile extension of the native HTMLElement.Here’s a small but non-trivial component (a countdown timer) that illustrates what Lit code looks like and highlights several key features: In turn, each Lit component is itself a building block that can be used–within an HTML document, another web component, or a framework component–to build larger and more complex interfaces. Even if you haven’t developed with components before, we think you’ll find Lit to be very approachable.Įach Lit component is a self-contained unit of UI, assembled from smaller building blocks: standard HTML elements and other web components. If you’ve done any modern, component-based web development, you should feel right at home with Lit. What is it like to develop with Lit? to “What is it like to develop with Lit?” # You can even update to a major new version of Lit–or migrate to another library–one component at a time, without disrupting product development. When you build an app with Lit, it’s easy to sprinkle in “vanilla” web components, or web components built with other libraries. Lit’s capabilities and developer experience are comparable to these popular alternatives, but Lit minimizes lock-in, maximizes flexibility and promotes maintainability by embracing the browser’s native component model. Of course, you can also build highly interactive, feature-rich apps out of Lit components, just as you would with a framework like React or Vue. Browsers will recognize Lit components in your markup and initialize them automatically–whether your site is handcrafted, managed via a CMS, built with a server-side framework, or generated by a tool like Jekyll or eleventy. Lit is also perfect for progressively enhancing basic HTML sites. Site developers using Lit components don’t need to write or even see any Lit code they can just use the components the same way they do built-in HTML elements. Lit components can be used across multiple apps and sites, even if those apps and sites are built on a variety of front-end stacks. This makes Lit an ideal choice for developing shareable components or design systems. Web components have the superpower of interoperability: natively supported by browsers, web components can be used in any HTML environment, with any framework or none at all. The first thing to know about Lit is that every Lit component is a standard web component. You can build just about any kind of web UI with Lit! What can I build with Lit? to “What can I build with Lit?” #
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