lit-html vs lit-element
Web Component Libraries Comparison
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What's Web Component Libraries?

LitElement and LitHtml are part of the Lit library ecosystem, designed to simplify the creation of web components. LitElement provides a base class for creating custom elements with reactive properties, while LitHtml offers a powerful templating engine for rendering HTML efficiently. Together, they enable developers to build fast, lightweight, and reusable components that adhere to the web standards of custom elements and shadow DOM. The primary advantage of using these libraries is their focus on performance and ease of use, allowing developers to create dynamic user interfaces with minimal boilerplate code.

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lit-html3,551,942
20,3011.71 MB5932 months agoBSD-3-Clause
lit-element3,426,144
20,301124 kB5932 months agoBSD-3-Clause
Feature Comparison: lit-html vs lit-element

Component Creation

  • lit-html:

    LitHtml does not create components itself but provides a powerful templating syntax that can be used within LitElement or any other framework. It allows for efficient rendering of HTML templates, enabling developers to create dynamic and interactive user interfaces.

  • lit-element:

    LitElement simplifies the creation of web components by providing a base class that handles property declaration, observation, and lifecycle methods. This allows developers to focus on building their components without worrying about the underlying complexities of the web component standards.

Reactivity

  • lit-html:

    LitHtml focuses on rendering and does not manage state directly. However, it works seamlessly with LitElement's reactive properties, allowing developers to leverage reactivity in their templates without additional overhead.

  • lit-element:

    LitElement introduces a reactive property system that automatically updates the component when properties change. This ensures that the UI is always in sync with the underlying data model, making it easier to manage state within components.

Performance

  • lit-html:

    LitHtml is designed for high performance, using a fine-grained update mechanism that only re-renders parts of the DOM that have changed. This reduces unnecessary DOM manipulations and improves rendering speed, especially in complex applications.

  • lit-element:

    LitElement is optimized for performance, utilizing the shadow DOM for encapsulation and efficient updates. It minimizes reflows and repaints in the browser, leading to faster rendering times and a smoother user experience.

Learning Curve

  • lit-html:

    LitHtml is relatively easy to learn, particularly for those with a background in JavaScript and HTML. Its templating syntax is intuitive, allowing developers to quickly grasp how to create dynamic content without extensive boilerplate.

  • lit-element:

    LitElement has a moderate learning curve, especially for developers familiar with web components. Its API is straightforward, making it accessible for those new to web component development while still offering advanced features for experienced developers.

Integration

  • lit-html:

    LitHtml can be used independently or in conjunction with LitElement. It can also be integrated into other frameworks, making it a versatile choice for rendering HTML in various contexts, whether in standalone applications or within larger frameworks.

  • lit-element:

    LitElement integrates well with other libraries and frameworks, allowing developers to use it alongside existing codebases. It can be easily incorporated into projects that utilize frameworks like React, Vue, or Angular, providing flexibility in component design.

How to Choose: lit-html vs lit-element
  • lit-html:

    Choose LitHtml if your primary need is an efficient templating engine for rendering HTML. It is suitable for applications where you want to create dynamic content without the overhead of a full framework, and you prefer a lightweight solution for rendering views.

  • lit-element:

    Choose LitElement if you need a robust framework for building reusable web components with reactive properties and lifecycle management. It is ideal for projects that require encapsulated styles and behavior, leveraging the power of custom elements.

Similar Npm Packages to lit-html

lit-html is a library for building HTML templates in JavaScript using tagged template literals. It allows developers to create dynamic and efficient HTML content by updating only the parts of the DOM that have changed, rather than re-rendering entire sections. This approach leads to better performance and a more declarative way of handling UI updates. While lit-html is a powerful tool for rendering HTML, there are other libraries in the ecosystem that offer similar functionalities. Here are a few alternatives:

  • lit is a modern library that builds on the concepts of lit-html and provides a more comprehensive framework for building web components. It combines lit-html with additional features, such as reactive properties and lifecycle methods, making it easier to create reusable components. If you are looking for a more complete solution for building web components with a focus on performance and simplicity, lit is an excellent choice. It streamlines the development process while maintaining the efficiency of lit-html.
  • lit-element is a base class for creating web components using lit-html. It provides a simple way to define custom elements with reactive properties and lifecycle callbacks. lit-element is particularly useful for developers who want to create encapsulated, reusable components that can be easily integrated into any web application. If your goal is to build web components that leverage the power of lit-html while adhering to the web components standard, lit-element is the way to go.

To explore how lit-html compares with lit and lit-element, check out the comparison: Comparing lit vs lit-element vs lit-html.

Similar Npm Packages to lit-element

lit-element is a simple and efficient library for building web components using the power of modern JavaScript. It leverages the capabilities of the Web Components standard, allowing developers to create reusable, encapsulated components that can be used in any web application. lit-element simplifies the process of creating these components by providing a base class that manages rendering, properties, and lifecycle methods, making it easier to build and maintain complex UI elements.

One of the main features of lit-element is its integration with lit-html, which is a library for rendering HTML templates in a declarative manner. By using tagged template literals, lit-html allows developers to create dynamic and efficient HTML templates that can react to changes in data. This combination of lit-element and lit-html provides a powerful toolkit for building modern web applications with a focus on performance and reusability.

While lit-element is a robust solution for building web components, it primarily relies on lit-html for rendering. Therefore, when considering alternatives, lit-html stands out as the most relevant option. It can be used independently for rendering HTML templates without the component lifecycle management features that lit-element provides. If you are looking for a lightweight solution to render HTML templates without the overhead of a full component framework, lit-html is an excellent choice.

For a detailed comparison of these packages, check out the following link: Comparing lit-element vs lit-html.

README for lit-html

lit-html

Efficient, Expressive, Extensible HTML templates in JavaScript

Build Status Published on npm Join our Discord Mentioned in Awesome Lit

lit-html is the template system that powers the Lit library for building fast web components.

When using lit-html to develop web components, most users should import lit-html via the lit package rather than installing and importing from lit-html directly.

Documentation

Full documentation is available at lit.dev/docs/templates/overview/.

Overview

lit-html lets you write HTML templates in JavaScript with template literals.

lit-html templates are plain JavaScript and combine the familiarity of writing HTML with the power of JavaScript. lit-html takes care of efficiently rendering templates to DOM, including efficiently updating the DOM with new values.

import {html, render} from 'lit-html';

// This is a lit-html template function. It returns a lit-html template.
const helloTemplate = (name) => html`<div>Hello ${name}!</div>`;

// This renders <div>Hello Steve!</div> to the document body
render(helloTemplate('Steve'), document.body);

// This updates to <div>Hello Kevin!</div>, but only updates the ${name} part
render(helloTemplate('Kevin'), document.body);

lit-html provides two main exports:

  • html: A JavaScript template tag used to produce a TemplateResult, which is a container for a template, and the values that should populate the template.
  • render(): A function that renders a TemplateResult to a DOM container, such as an element or shadow root.

Installation

$ npm install lit-html

Or use from lit:

$ npm install lit

Contributing

Please see CONTRIBUTING.md.

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