lit-html/README.md

HTML template literals in JavaScript

> ## 🛠 Status: In Development
> lit-html is currently in development. It's on the fast track to a 1.0 release, so we encourage you to use it and give us your feedback, but there are things that haven't been finalized yet and you can expect some changes.

# lit-html
Efficient, Expressive, Extensible HTML templates in JavaScript

[![Build Status](https://travis-ci.org/Polymer/lit-html.svg?branch=master)](https://travis-ci.org/Polymer/lit-html)
[![Published on npm](https://img.shields.io/npm/v/lit-html.svg)](https://www.npmjs.com/package/lit-html)

## Documentation

Full documentation is available at [polymer.github.io/lit-html](https://polymer.github.io/lit-html).

## Overview

`lit-html` lets you write [HTML templates](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/template) in JavaScript with [template literals](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/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.

```javascript
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](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals#Tagged_template_literals) 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

```bash
$ npm install lit-html
```

## Status

`lit-html` is under active development and has not yet had a 1.0 release. The
internal API may still change somewhat. The `html` and `render` API is stable.

## Contributing

Please see [CONTRIBUTING.md](./CONTRIBUTING.md).