Polymer/lit-html
Lit Html
lit-html is a JavaScript HTML templating library and reactive UI template engine. It uses tagged template literals to render dynamic HTML templates, focusing on efficient partial updates to the DOM to minimize browser reflows.
The library functions as a rendering tool for web components and supports server-side rendering to improve initial page load speeds and search engine optimization.
Its capabilities cover the development of lightweight custom HTML elements and the management of dynamic HTML rendering. It includes support for high-performance list rendering and the handling of asynchronous state within the user interface.
Features
- Template Literal Renderers - Utilizes JavaScript tagged template literals to render and update DOM elements without a virtual DOM.
- Reactive UI Engines - Provides a reactive engine that minimizes browser reflows by updating only the specific parts of the document that change.
- DOM Node Mapping - Maintains a mapping between template placeholders and actual DOM nodes to update only changed elements.
- Surgical DOM Update Engines - Uses a surgical update engine to modify only the specific text or attribute nodes that change.
- UI State Reconciliation - Implements a reconciliation engine that minimizes DOM mutations by comparing new values against the previous state.
- State-to-HTML Rendering - Converts internal application state directly into HTML structures with efficient, partial DOM updates.
- Dynamic Template Rendering - Performs runtime evaluation of templates with dynamic data to ensure efficient rendering.
- Template AST Parsing - Converts template strings into an abstract syntax tree to identify static content and dynamic expressions.
- HTML Templating Engines - Functions as a general-purpose HTML templating engine that processes structured templates to generate dynamic content.
- Web Component Renderers - Provides lightweight tools for generating the HTML structures and dynamic content used within custom web components.
- Web Components - Provides a foundation for building lightweight, reactive custom elements as standard Web Components.
- Task State Renderers - Provides declarative templates for rendering various asynchronous task outcomes, including loading and error states.
- Virtualized Lists - Optimizes performance for large datasets by rendering only the items currently visible in the viewport.
- Async State Presentation - Implements UI patterns for rendering the status and results of asynchronous computations.
- Contextual Data Propagation - Implements a protocol to share data across a tree of elements without passing properties through every intermediate layer.
- High-Performance Rendering - Employs optimized rendering techniques that minimize DOM updates and overhead for high-performance lists.
- Server-Side Rendering - Supports generating dynamic HTML content on the server to improve initial load speeds and SEO.
- Tools - Listed in the “Tools” section of the Awesome Polymer awesome list.
