React DOM 组件
通用组件
所有的浏览器内置组件都支持一些共同的属性与方法。
这些组件在 React 中可以使用 React 特有的属性,如 ref
与 dangerouslySetInnerHTML
。
表单组件
这些浏览器内置组件接收用户的输入:
将 value
作为 prop 传递给这些组件会将其变为 受控组件。
Resource and Metadata Components
These built-in browser components let you load external resources or annotate the document with metadata:
They are special in React because React can render them into the document head, suspend while resources are loading, and enact other behaviors that are described on the reference page for each specific component.
所有的 HTML 组件
React 支持所有浏览器内置的组件,包括:
<aside>
<audio>
<b>
<base>
<bdi>
<bdo>
<blockquote>
<body>
<br>
<button>
<canvas>
<caption>
<cite>
<code>
<col>
<colgroup>
<data>
<datalist>
<dd>
<del>
<details>
<dfn>
<dialog>
<div>
<dl>
<dt>
<em>
<embed>
<fieldset>
<figcaption>
<figure>
<footer>
<form>
<h1>
<head>
<header>
<hgroup>
<hr>
<html>
<i>
<iframe>
<img>
<input>
<ins>
<kbd>
<label>
<legend>
<li>
<link>
<main>
<map>
<mark>
<menu>
<meta>
<meter>
<nav>
<noscript>
<object>
<ol>
<optgroup>
<option>
<output>
<p>
<picture>
<pre>
<progress>
<q>
<rp>
<rt>
<ruby>
<s>
<samp>
<script>
<section>
<select>
<slot>
<small>
<source>
<span>
<strong>
<style>
<sub>
<summary>
<sup>
<table>
<tbody>
<td>
<template>
<textarea>
<tfoot>
<th>
<thead>
<time>
<title>
<tr>
<track>
<u>
<ul>
<var>
<video>
<wbr>
自定义 HTML 元素
如果你渲染一个带有连字符的标签,如 <my-element>
,React 会认为你想要渲染一个 自定义 HTML 元素。
如果你使用 is
属性渲染一个内置的浏览器 HTML 元素,它也会被视为自定义元素。
Setting values on custom elements
Custom elements have two methods of passing data into them:
- Attributes: Which are displayed in markup and can only be set to string values
- Properties: Which are not displayed in markup and can be set to arbitrary JavaScript values
By default, React will pass values bound in JSX as attributes:
<my-element value="Hello, world!"></my-element>
Non-string JavaScript values passed to custom elements will be serialized by default:
// Will be passed as `"1,2,3"` as the output of `[1,2,3].toString()`
<my-element value={[1,2,3]}></my-element>
React will, however, recognize an custom element’s property as one that it may pass arbitrary values to if the property name shows up on the class during construction:
export class MyElement extends HTMLElement { constructor() { super(); // The value here will be overwritten by React // when initialized as an element this.value = undefined; } connectedCallback() { this.innerHTML = this.value.join(", "); } }
Listening for events on custom elements
A common pattern when using custom elements is that they may dispatch CustomEvent
s rather than accept a function to call when an event occur. You can listen for these events using an on
prefix when binding to the event via JSX.
export function App() { return ( <my-element onspeak={e => console.log(e.detail.message)} ></my-element> ) }
所有 SVG 组件
React 支持所有浏览器内置的 SVG 组件,包括:
<a>
<animate>
<animateMotion>
<animateTransform>
<circle>
<clipPath>
<defs>
<desc>
<discard>
<ellipse>
<feBlend>
<feColorMatrix>
<feComponentTransfer>
<feComposite>
<feConvolveMatrix>
<feDiffuseLighting>
<feDisplacementMap>
<feDistantLight>
<feDropShadow>
<feFlood>
<feFuncA>
<feFuncB>
<feFuncG>
<feFuncR>
<feGaussianBlur>
<feImage>
<feMerge>
<feMergeNode>
<feMorphology>
<feOffset>
<fePointLight>
<feSpecularLighting>
<feSpotLight>
<feTile>
<feTurbulence>
<filter>
<foreignObject>
<g>
<hatch>
<hatchpath>
<image>
<line>
<linearGradient>
<marker>
<mask>
<metadata>
<mpath>
<path>
<pattern>
<polygon>
<polyline>
<radialGradient>
<rect>
<script>
<set>
<stop>
<style>
<svg>
<switch>
<symbol>
<text>
<textPath>
<title>
<tspan>
<use>
<view>