782 lines
32 KiB
Markdown
782 lines
32 KiB
Markdown
[English](./README.md) | 简体中文 | [한국어](./README.KR.md)
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<p align="right">v<strong>5.0.19</strong></p>
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<p align="center"><img src="./assets/omi3.png" alt="omi" width="300"/></p>
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<h2 align="center">Omi - 下一代 Web 框架，去万物糟粕，合精华为一点点 JS</h2>
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<p align="center"><b>基于 Web Components 并使用 omio 兼容老浏览器(IE8+)</b></p>
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### 特性
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- 小巧的尺寸
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- 使用 [omio](https://github.com/Tencent/omi/tree/master/packages/omio) 可以兼容到 IE8
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- 真正的 [MVVM](https://github.com/Tencent/omi/blob/master/tutorial/omi-mvvm.cn.md), 拥有 [mappingjs](https://github.com/Tencent/omi/tree/master/packages/mappingjs) 强力支持
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- 支持 `TypeScript`
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- 响应式数据绑定
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- 增强了 CSS, [支持 rpx 单位](https://github.com/Tencent/omi/releases/tag/v4.0.26)，基于 **750** 屏幕宽度
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- [基于 Shadow Dom 设计](https://developers.google.cn/web/fundamentals/web-components/shadowdom?hl=zh-cn)
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- 利用[Chrome 开发工具扩展 ](https://github.com/f/omi-devtools)轻松调试，[从 Chrome 应用商店安装](https://chrome.google.com/webstore/detail/omijs-devtools/pjgglfliglbhpcpalbpeloghnbceocmd/related)
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- 符合浏览器的发展趋势以及API设计理念
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- [**Web Components**](https://developers.google.com/web/fundamentals/web-components/) + [**JSX**](https://reactjs.org/docs/introducing-jsx.html) 相互融合为一个框架 Omi
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- 内置 observe 制作响应式视图(免去 `this.update`)
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- Web Components 也可以数据驱动视图, `UI = fn(data)`
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- JSX 是开发体验最棒(智能提示)、[语法噪音最少](https://github.com/facebook/jsx#why-not-template-literals)、图灵完备的 UI 表达式，模板引擎不完备，模板字符串完备但是语法噪音太大
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- 独创的 `Path Updating` 机制，基于 Proxy 全自动化的精准更新，功耗低，自由度高，性能卓越，方便集成 `requestIdleCallback`
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- 对 this.update 说再见吧！只要使用 `store` 系统，它就会自动化按需更新局部视图
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- 看看[Facebook React 和 Web Components对比优势](https://www.cnblogs.com/rubylouvre/p/4072979.html)，Omi 融合了各自的优点，而且给开发者自由的选择喜爱的方式
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- `Shadow DOM` 与 `Virtual DOM` 融合，Omi 既使用了`虚拟 DOM`，也是使用真实 `Shadow DOM`，让视图更新更准确更迅速
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- 99.9% 的项目不需要什么时间旅行，也不需要时间旅行调试(`Time travel debugging`),而且也不仅仅 redux 能时间旅行,请不要上来就 `redux`，Omi `store` 系统可以满足所有项目。
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- 局部 CSS 最佳解决方案(`Shadow DOM`)，社区为局部 CSS 折腾了不少框架和库(使用js或json写样式，如:`Radium`，`jsxstyle`，`react-style`；与webpack绑定使用生成独特的className`文件名—类名—hash值`，如：`CSS Modules`，`Vue`)，还有运行时注入`scoped atrr` 的方式，都是 hack 技术；`Shadow DOM Style` 是最完美的方案
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对比同样开发 TodoApp， Omi 和 React 渲染完的 DOM 结构，Omi 使用 Shadow DOM 隔离样式和语义化结构:
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| **Omi** | **React** |
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|-|-|
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|  |  |
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## Omi 生态
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[→ Omi 生态学习路线图](https://github.com/Tencent/omi/tree/master/assets/rm.md)
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| **项目** | **描述** |
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| ------------------------------- | ----------------------------------- |
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| [omi-docs](https://github.com/Tencent/omi/blob/master/docs/main-concepts.cn.md)| Omi 官方文档 |
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| [omio ](https://github.com/Tencent/omi/tree/master/packages/omio)| 兼容老浏览器的 Omi 版本(支持到IE8+和移动端浏览器)。|
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| [omi-mp-create ](https://github.com/Tencent/omi/tree/master/packages/omi-mp-create)| 极小却精巧的小程序框架。|
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| [md2site ](https://tencent.github.io/omi/assets/md2site/)| 用 markdown 生成静态网站文档.|
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| [omi-mvvm ](https://github.com/Tencent/omi/blob/master/tutorial/omi-mvvm.cn.md)| MVVM 王者归来, [mappingjs](https://github.com/Tencent/omi/tree/master/packages/mappingjs) 强力加持。|
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| [omi-chart](https://github.com/Tencent/omi/tree/master/packages/omi-chart)| 一个 chart-x 标签搞定报表|
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| [mp-mvvm ](https://github.com/Tencent/omi/tree/master/packages/mp-mvvm)| 小程序插上 MVVM 的翅膀, [mappingjs](https://github.com/Tencent/omi/tree/master/packages/mappingjs) 强力加持。|
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| [omi-html](https://github.com/Tencent/omi/tree/master/packages/omi-html)| Using [htm](https://github.com/developit/htm) in omi.|
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| [omi-30-seconds](https://github.com/Tencent/omi/tree/master/packages/omi-30-seconds)| 30 秒理解一段有用的 Omi 代码片段.|
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| [omi-sprite](https://github.com/Tencent/omi/tree/master/packages/omi-sprite)| Web Components, JSX 和 Canvas 的完美融合|
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| [omi-canvas](https://github.com/Tencent/omi/tree/master/packages/omi-canvas)| Web Components, JSX 和 Canvas 的完美融合|
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| [omi-mp ](https://github.com/Tencent/omi/tree/master/packages/omi-mp)| 通过微信小程序开发和生成 Web 单页应用(H5 SPA)|
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| [omi-router ](https://github.com/Tencent/omi/tree/master/packages/omi-router) |Omi 官方路由。[→ DEMO](https://tencent.github.io/omi/packages/omi-router/examples/spa/build/)|
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| [omi-devtools](https://github.com/f/omi-devtools)| 谷歌浏览器开发工具扩展|
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| [omi-cli](https://github.com/Tencent/omi/tree/master/packages/omi-cli)| 项目脚手架工具，各种模板任你选。 |
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| [omi-ex](https://github.com/Tencent/omi/tree/master/packages/omi-ex)| Omi.js 扩展(TypeScript) |
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| [omi-transform](https://github.com/Tencent/omi/tree/master/packages/omi-transform)|Omi 和 [css3transform](https://tencent.github.io/omi/packages/omi-transform/css3transform/) 完美结合. 让 css3 transform 在你的 Omi项目中变得超级简单.|
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| [omi-tap2](https://github.com/Tencent/omi/releases/tag/v4.0.24)| Omi 原生支持 tap 事件（omi v4.0.24+）|
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| [omi-tap](https://github.com/Tencent/omi/tree/master/packages/omi-tap)| 让 Omi 项目轻松支持 tap 事件|
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| [omi-finger](https://github.com/Tencent/omi/tree/master/packages/omi-finger)|Omi 官方手势库|
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| [omi-touch](https://github.com/Tencent/omi/tree/master/packages/omi-touch)|丝般顺滑的触摸运动|
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| [omi-use](https://github.com/Tencent/omi/blob/master/docs/main-concepts.cn.md#use)|跟 React hooks 类似的方式定义纯组件|
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| [omi-native](https://github.com/Tencent/omi/tree/master/packages/omi-native)|把 web components 渲染到 native，比如 IOS 、Android|
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| [westore](https://github.com/dntzhang/westore)|小程序解决方案 westore，与 Omi 互相启发|
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| [omi-weui](https://github.com/Tencent/omi/tree/master/packages/omi-weui) |[Weui](https://weui.io/) for Omi by [@132yse](https://github.com/132yse).|
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|[omi-i18n](https://github.com/i18next/omi-i18n)| Omi 国际化解决方案 |
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| [omi-page](https://github.com/Tencent/omi/tree/master/packages/omi-page) | 基于 [page.js](https://github.com/visionmedia/page.js) 的 Omi 路由|
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## omi-mp
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> 通过微信小程序开发和一键生成 Web 的 H5 SPA (基于 omi + [omi-router](https://github.com/Tencent/omi/tree/master/packages/omi-router))
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看下官方模板的转换例子：
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| **Index** | **Logs** |
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| ------------------------------- | ----------------------------------- |
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因为 Web 里拉取不到用户登录态，更换了用户头像和名称。
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## 必须收藏的资源
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* [Omio 兼容 IE8 踩坑之路](https://github.com/Tencent/omi/blob/master/tutorial/omio.cn.md)
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* [深入浅出 Shadow Dom](https://github.com/Tencent/omi/blob/master/tutorial/shadow-dom-in-depth.cn.md)
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* [HTM - JSX 的替代品？还是另一种选择？](https://github.com/Tencent/omi/blob/master/tutorial/omi-html.cn.md)
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* [60FPS Animation In Omi](https://github.com/Tencent/omi/blob/master/tutorial/omi-transform.cn.md)
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* [Render Web Components To Native](https://github.com/Tencent/omi/blob/master/tutorial/render-web-components-to-native.cn.md)
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* [Web Components MDN](https://developer.mozilla.org/zh-CN/docs/Web/Web_Components)
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* [Web Components Google](https://developers.google.com/web/fundamentals/web-components/)
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* [Web Components Org](https://www.webcomponents.org/introduction)
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* [Proxy MDN](https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Proxy)
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* [CSS Variables](https://developer.mozilla.org/zh-CN/docs/Web/CSS/Using_CSS_variables)
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* [CSS Shadow Parts](https://drafts.csswg.org/css-shadow-parts-1/)
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* [Part Theme Explainer](https://meowni.ca/posts/part-theme-explainer/)
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* [Platform HTML5](https://platform.html5.org/)
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* [使用 requestIdleCallback](https://div.io/topic/1370)
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* [A requestIdleCallback polyfill](https://gist.github.com/paullewis/55efe5d6f05434a96c36)
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* [The Power Of Web Components](https://hacks.mozilla.org/2018/11/the-power-of-web-components/)
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* [ShadowRoot](https://developer.mozilla.org/zh-CN/docs/Web/API/ShadowRoot)
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* [Developer Tools support for Web Components in Firefox 63](https://blog.nightly.mozilla.org/2018/09/06/developer-tools-support-for-web-components-in-firefox-63/)
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---
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# 目录
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- [Omi 生态](#omi-生态)
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- [omi-mp](#omi-mp)
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- [必须收藏的资源](#必须收藏的资源)
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- [一个 HTML 完全上手](#一个-html-完全上手)
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- [再花 30 秒完全上手](#再花-30-秒完全上手)
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- [快速入门](#快速入门)
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- [安装](#安装)
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- [项目模板](#项目模板)
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- [Hello Element](#hello-element)
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- [TodoApp](#todoapp)
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- [Store](#store)
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- [Mitt](#mitt)
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- [Observe](#observe)
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- [生命周期](#生命周期)
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- [调试工具](#调试工具)
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- [浏览器兼容](#浏览器兼容)
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- [React 组件转成 Omi](#react-组件转成-omi)
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- [相关链接](#相关链接)
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- [贡献者们](#贡献者们)
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- [维护者](#维护者)
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- [感谢](#感谢)
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- [License](#license)
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## 一个 HTML 完全上手
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下面这个页面不需要任何构建工具就可以执行
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* [点击这里看执行结果](https://tencent.github.io/omi/assets/)
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* [Omi.js CDN](https://unpkg.com/omi)
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```html
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8" />
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<title>Add Omi in One Minute</title>
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</head>
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<body>
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<script src="https://unpkg.com/omi"></script>
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<script>
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const { WeElement, h, render, define } = Omi
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define('like-button',
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class extends WeElement {
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install() {
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this.data = { liked: false }
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}
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render() {
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if (this.data.liked) {
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return 'You liked this.'
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}
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return h(
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'button',
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{
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onClick: () => {
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this.data.liked = true
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this.update()
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}
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},
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'Like'
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)
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}
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})
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render(h('like-button'), 'body')
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</script>
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</body>
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</html>
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```
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通过上面脚本的执行，你已经定义好了一个自定义标签，可以不使用 render 方法，直接使用 `like-button` 标签：
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```jsx
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<body>
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<like-button></like-button>
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</body>
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```
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## 再花 30 秒完全上手
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你也可以使用现代化的 JS 语法，快速构建 Omi 项目:
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```js
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import { render, WeElement, tag, observe } from "omi"
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@observe
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@tag("my-counter")
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class MyCounter extends WeElement {
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data = {
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count: 0
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}
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sub = () => {
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this.data.count--
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}
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add = () => {
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this.data.count++
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}
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render() {
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return (
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<div>
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<button onClick={this.sub}>-</button>
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<span>{this.data.count}</span>
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<button onClick={this.add}>+</button>
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</div>
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)
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}
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}
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render(<my-counter />, "body")
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```
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[→ counter demo](https://tencent.github.io/omi/packages/omi/examples/counter/)
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你会发现 `MyCounter` 从未使用过，所以你可以使用下面代码达到同样效果并且避免 Eslint 提示错误:
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```js
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import { render, WeElement, define } from 'omi'
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define('my-counter', class extends WeElement {
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static observe = true
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data = {
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count: 1
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}
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sub = () => {
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this.data.count--
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}
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add = () => {
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this.data.count++
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}
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render() {
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return (
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<div>
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<button onClick={this.sub}>-</button>
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<span>{this.data.count}</span>
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<button onClick={this.add}>+</button>
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</div>
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)
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}
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})
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render(<my-counter />, 'body')
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```
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<!--
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你也可以定义成纯函数的形式:
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```js
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import { define, render } from 'omi'
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define('my-counter', function() {
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const [count, setCount] = this.use({
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data: 0,
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effect: function() {
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document.title = `The num is ${this.data}.`
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}
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})
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this.useCss(`button{ color: red; }`)
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return (
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<div>
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<button onClick={() => setCount(count - 1)}>-</button>
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<span>{count}</span>
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<button onClick={() => setCount(count + 1)}>+</button>
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</div>
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)
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})
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render(<my-counter />, 'body')
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```
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如果你不需要 effect 方法, 可以直接使用 `useData`:
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```js
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const [count, setCount] = this.useData(0)
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``` -->
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## 快速入门
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### 安装
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```bash
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$ npm i omi-cli -g # install cli
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$ omi init my-app # init project, you can also exec 'omi init' in an empty folder
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$ cd my-app # please ignore this command if you executed 'omi init' in an empty folder
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$ npm start # develop
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$ npm run build # release
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```
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> `npx omi-cli init my-app` 也支持(要求 npm v5.2.0+)
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目录说明:
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```
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├─ config
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├─ public
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├─ scripts
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├─ src
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│ ├─ assets
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│ ├─ elements //存放所有 custom elements
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│ ├─ store //存放所有页面的 store
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│ ├─ admin.js //入口文件，会 build 成 admin.html
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│ └─ index.js //入口文件，会 build 成 index.html
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```
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关于编译网站的 url 前缀的设置，可以参考两个地址：
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* [build problem](https://stackoverflow.com/questions/42686149/create-react-app-build-with-public-url)
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* [build env doc](https://facebook.github.io/create-react-app/docs/adding-custom-environment-variables#referencing-environment-variables-in-the-html)
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比如在 windows 下:
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```json
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"scripts": {
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"start": "node scripts/start.js",
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"_build": "node scripts/build.js",
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"build":"set PUBLIC_URL=https://fe.wxpay.oa.com/dv&& npm run _build"
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}
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```
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在 mac os 中:
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```json
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"scripts": {
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"start": "node scripts/start.js",
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"_build": "node scripts/build.js",
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"build":"PUBLIC_URL=https://fe.wxpay.oa.com/dv npm run _build",
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"fix": "eslint src --fix"
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},
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```
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如果你只想使用相对地址:
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```
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"build":"set PUBLIC_URL=.&& npm run _build" //windows
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"build":"PUBLIC_URL=. npm run _build", //mac os
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```
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### 项目模板
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| **Template Type**| **Command**| **Describe**|
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| ------------ | -----------| ----------------- |
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|Base Template|`omi init my-app`| 基础模板|
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|Omio Template|`omi init-o my-app`| 使用 omio，兼容 IE8+ 和移动 Web 的模板|
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|Mobile Template|`omi init-weui my-app`| 使用了 weui 和 omi-router 的移动 web app 模板|
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|TypeScript Template(omi-cli v3.0.5+)|`omi init-ts my-app`|使用 TypeScript 的模板|
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|TypeScript Template(omi-cli v3.2.4+)|`omi init-typescript my-app`|支持 Typescript 和 scoped css 的模板|
|
||
|[SPA Template](https://tencent.github.io/omi/packages/omi-router/examples/spa/build/)(omi-cli v3.0.10+)|`omi init-spa my-app`|使用 omi-router 单页应用的模板|
|
||
|omi-mp Template(omi-cli v3.0.13+)|`omi init-mp my-app` |小程序开发 Web 的模板|
|
||
|MVVM Template(omi-cli v3.0.22+)|`omi init-mvvm my-app` |MVVM 模板|
|
||
|
||
Cli 自动创建的项目脚手架是基于单页的 create-react-app 改造成多页的，有配置方面的问题可以查看 [create-react-app 用户指南](https://facebook.github.io/create-react-app/docs/getting-started)。
|
||
|
||
### Hello Element
|
||
|
||
先创建一个自定义元素:
|
||
|
||
```js
|
||
import { define, WeElement } from 'omi'
|
||
|
||
define('hello-element', class extends WeElement {
|
||
onClick = evt => {
|
||
// trigger CustomEvent
|
||
this.fire('abc', { name: 'dntzhang', age: 12 })
|
||
evt.stopPropagation()
|
||
}
|
||
|
||
css() {
|
||
return `
|
||
div {
|
||
color: red;
|
||
cursor: pointer;
|
||
}`
|
||
}
|
||
|
||
render(props) {
|
||
return (
|
||
<div onClick={this.onClick}>
|
||
Hello {props.msg} {props.propFromParent}
|
||
<div>Click Me!</div>
|
||
</div>
|
||
)
|
||
}
|
||
})
|
||
```
|
||
|
||
使用该元素:
|
||
|
||
```js
|
||
import { define, render, WeElement } from 'omi'
|
||
import './hello-element'
|
||
|
||
define('my-app', class extends WeElement {
|
||
data = { abc: 'abc', passToChild: 123 }
|
||
|
||
// define CustomEvent Handler
|
||
onAbc = evt => {
|
||
// get evt data by evt.detail
|
||
this.data.abc = ' by ' + evt.detail.name
|
||
this.data.passToChild = 1234
|
||
this.update()
|
||
}
|
||
|
||
css() {
|
||
return `
|
||
div{
|
||
color: green;
|
||
}`
|
||
}
|
||
|
||
render(props, data) {
|
||
return (
|
||
<div>
|
||
Hello {props.name} {data.abc}
|
||
<hello-element
|
||
onAbc={this.onAbc}
|
||
propFromParent={data.passToChild}
|
||
msg="WeElement"
|
||
/>
|
||
</div>
|
||
)
|
||
}
|
||
})
|
||
|
||
render(<my-app name="Omi v4.0" />, 'body')
|
||
```
|
||
|
||
告诉 Babel 把 JSX 转化成 Omi.h() 的调用:
|
||
|
||
``` json
|
||
{
|
||
"presets": ["env", "omi"]
|
||
}
|
||
```
|
||
|
||
需要安装下面两个 npm 包支持上面的配置:
|
||
|
||
``` bash
|
||
"babel-preset-env": "^1.6.0",
|
||
"babel-preset-omi": "^0.1.1",
|
||
```
|
||
|
||
如果你使用 babel7，也可以使用如下包和配置：
|
||
|
||
```bash
|
||
npm install --save-dev @babel/preset-env
|
||
npm install --save-dev @babel/preset-react
|
||
```
|
||
|
||
```js
|
||
{
|
||
"presets": [
|
||
"@babel/preset-env",
|
||
[
|
||
"@babel/preset-react",
|
||
{
|
||
"pragma": "Omi.h",
|
||
}
|
||
]
|
||
]
|
||
}
|
||
```
|
||
|
||
如果不想把 css 写在 js 里，你可以使用 webpack [to-string-loader](https://www.npmjs.com/package/to-string-loader), 比如下面配置:
|
||
|
||
``` js
|
||
{
|
||
test: /[\\|\/]_[\S]*\.css$/,
|
||
use: [
|
||
'to-string-loader',
|
||
'css-loader'
|
||
]
|
||
}
|
||
```
|
||
|
||
如果你的 css 文件以 `_` 开头, css 会使用 to-string-loader. 如：
|
||
|
||
``` js
|
||
import { tag, WeElement render } from 'omi'
|
||
//typeof cssStr is string
|
||
import cssStr from './_index.css'
|
||
|
||
@tag('my-app')
|
||
class MyApp extends WeElement {
|
||
|
||
css() {
|
||
return cssStr
|
||
}
|
||
...
|
||
...
|
||
...
|
||
```
|
||
|
||
你也可以忘掉这一对繁琐的配置直接使用 omi-cli，不需要你配置任何东西。
|
||
|
||
### TodoApp
|
||
|
||
下面列举一个相对完整的 TodoApp 的例子:
|
||
|
||
```js
|
||
import { define, render, WeElement } from 'omi'
|
||
|
||
define('todo-list', function(props) {
|
||
return (
|
||
<ul>
|
||
{props.items.map(item => (
|
||
<li key={item.id}>{item.text}</li>
|
||
))}
|
||
</ul>
|
||
)
|
||
})
|
||
|
||
define('todo-app', class extends WeElement {
|
||
static observe = true
|
||
|
||
data = { items: [], text: '' }
|
||
|
||
render() {
|
||
return (
|
||
<div>
|
||
<h3>TODO</h3>
|
||
<todo-list items={this.data.items} />
|
||
<form onSubmit={this.handleSubmit}>
|
||
<input
|
||
id="new-todo"
|
||
onChange={this.handleChange}
|
||
value={this.data.text}
|
||
/>
|
||
<button>Add #{this.data.items.length + 1}</button>
|
||
</form>
|
||
</div>
|
||
)
|
||
}
|
||
|
||
handleChange = e => {
|
||
this.data.text = e.target.value
|
||
}
|
||
|
||
handleSubmit = e => {
|
||
e.preventDefault()
|
||
if (!this.data.text.trim().length) {
|
||
return
|
||
}
|
||
this.data.items.push({
|
||
text: this.data.text,
|
||
id: Date.now()
|
||
})
|
||
this.data.text = ''
|
||
}
|
||
})
|
||
|
||
render(<todo-app />, 'body')
|
||
```
|
||
|
||
### Store
|
||
|
||
使用 Store 体系可以告别 update 方法，基于 Proxy 的全自动属性追踪和更新机制。强大的 Store 体系是高性能的原因，除了靠 props 决定组件状态的组件，其余组件所有 data 都挂载在 store 上,
|
||
|
||
```js
|
||
export default {
|
||
data: {
|
||
items: [],
|
||
text: '',
|
||
firstName: 'dnt',
|
||
lastName: 'zhang',
|
||
fullName: function () {
|
||
return this.firstName + this.lastName
|
||
},
|
||
globalPropTest: 'abc', //更改我会刷新所有页面,不需要再组件和页面声明data依赖
|
||
ccc: { ddd: 1 } //更改我会刷新所有页面,不需要再组件和页面声明data依赖
|
||
},
|
||
globalData: ['globalPropTest', 'ccc.ddd'],
|
||
add: function () {
|
||
if (!this.data.text.trim().length) {
|
||
return;
|
||
}
|
||
this.data.items.push({
|
||
text: this.data.text,
|
||
id: Date.now()
|
||
})
|
||
this.data.text = ''
|
||
}
|
||
//默认 false，为 true 会无脑更新所有实例
|
||
//updateAll: true
|
||
}
|
||
```
|
||
|
||
自定义 Element 需要声明依赖的 data，这样 Omi store 根据自定义组件上声明的 data 计算依赖 path 并会按需局部更新。如:
|
||
|
||
```js
|
||
define('todo-app', class extends WeElement {
|
||
static get data() {
|
||
//如果你用了 store，这个只是用来声明依赖，按需 Path Updating
|
||
return { items: [], text: '' }
|
||
}
|
||
...
|
||
...
|
||
...
|
||
handleChange = (e) => {
|
||
this.store.data.text = e.target.value
|
||
}
|
||
|
||
handleSubmit = (e) => {
|
||
e.preventDefault()
|
||
this.store.add()
|
||
}
|
||
})
|
||
```
|
||
|
||
* 数据的逻辑都封装在了 store 定义的方法里 (如 store.add)
|
||
* 视图只负责传递数据给 store （如上面调用 store.add 或设置 store.data.text）
|
||
|
||
需要在 render 的时候从根节点注入 store 才能在所有自定义 Element 里使用 this.store:
|
||
|
||
```js
|
||
render(<todo-app></todo-app>, 'body', store)
|
||
```
|
||
|
||
[→ Store 完整的代码](https://github.com/Tencent/omi/blob/master/packages/omi/examples/store/main.js)
|
||
|
||
总结一下:
|
||
|
||
* store.data 用来列出所有属性和默认值(除去 props 决定的视图的组件)
|
||
* 组件和页面的 data 用来列出依赖的 store.data 的属性 (omi会记录path)，按需更新
|
||
* 如果页面简单组件很少，可以 updateAll 设置成 true，并且组件和页面不需要声明 data，也就不会按需更新
|
||
* globalData 里声明的 path，只要修改了对应 path 的值，就会刷新所有页面和组件，globalData 可以用来列出所有页面或大部分公共的属性 Path
|
||
|
||
## Mitt
|
||
|
||
如果不想使用 store 的 data 体系，也可以使用发布订阅模式。比如在 Omi 中使用 [mitt](https://github.com/developit/mitt) 跨组件通讯:
|
||
|
||
* [cross-component-communication](https://github.com/Tencent/omi/blob/master/packages/omi-30-seconds/README.md#cross-component-communication)
|
||
|
||
## Observe
|
||
|
||
### Omi Observe
|
||
|
||
你可以为那些不需要 store 的自定义元素使用 observe 创建响应式视图，比如:
|
||
|
||
```js
|
||
import { define, WeElement } from "omi"
|
||
|
||
define("my-app", class extends WeElement {
|
||
static observe = true
|
||
|
||
install() {
|
||
this.data.name = "omi"
|
||
}
|
||
|
||
onClick = () => {
|
||
this.data.name = "Omi V4.0"
|
||
}
|
||
|
||
render(props, data) {
|
||
return (
|
||
<div onClick={this.onClick}>
|
||
<h1>Welcome to {data.name}</h1>
|
||
</div>
|
||
)
|
||
}
|
||
})
|
||
```
|
||
<!--
|
||
如果你想要兼容 IE11,请使用 `omi-mobx` 代替 omi 自带的 observe，往下看..
|
||
|
||
### Omi Mobx
|
||
|
||
```js
|
||
import { tag, WeElement } from "omi"
|
||
import { observe } from "omi-mobx"
|
||
|
||
@observe
|
||
@tag("my-app")
|
||
class MyApp extends WeElement {
|
||
install() {
|
||
this.data.name = "omi"
|
||
}
|
||
|
||
onClick = () => {
|
||
this.data.name = "Omi V4.0"
|
||
}
|
||
|
||
render(props, data) {
|
||
return (
|
||
<div onClick={this.onClick}>
|
||
<h1>Welcome to {data.name}</h1>
|
||
</div>
|
||
)
|
||
}
|
||
}
|
||
``` -->
|
||
|
||
### 生命周期
|
||
|
||
| Lifecycle method | When it gets called |
|
||
| ---------------- | -------------------------------------------- |
|
||
| `install` | before the component gets mounted to the DOM |
|
||
| `installed` | after the component gets mounted to the DOM |
|
||
| `uninstall` | prior to removal from the DOM |
|
||
| `beforeUpdate` | before update |
|
||
| `afterUpdate` | after update (deprecated) |
|
||
| `updated` | after update |
|
||
| `beforeRender` | before `render()` |
|
||
| `receiveProps` | parent element re-render will trigger it |
|
||
|
||
## 调试工具
|
||
|
||
使用 [Omi 开发工具](https://chrome.google.com/webstore/detail/omijs-devtools/pjgglfliglbhpcpalbpeloghnbceocmd) 可以非常简单地调试和管理你的 UI。不需要任何配置，你只要安装然后就能调试。
|
||
|
||
既然 Omi 使用了 Web Components 和 Shadow-DOM, 所以不需要像 React 一样安装其他元素面板，只需要使用 Chrome 自带的 **Elements' sidebar** 便可，它和 React 开发者工具一样强大。
|
||
|
||
|
||
|
||
## React 组件转成 Omi
|
||
|
||
举个例子，下面是吧 weui react 的 button 转成 weui omi 的 button 的例子 :
|
||
|
||
|
||
|
||
* [Diff Split](https://github.com/Tencent/omi/commit/9790fadaaf20cfede80bcf9213756a83fc8c3949?diff=split)
|
||
* [Diff Unified](https://github.com/Tencent/omi/commit/9790fadaaf20cfede80bcf9213756a83fc8c3949?diff=unified)
|
||
* [Before](https://github.com/Tencent/omi/blob/c8af654f1d5865dc557c0b4b8ad524f702a69be5/packages/omi-weui/src/omi-weui/elements/button/button.js)
|
||
* [After](https://github.com/Tencent/omi/blob/9790fadaaf20cfede80bcf9213756a83fc8c3949/packages/omi-weui/src/omi-weui/elements/button/button.js)
|
||
|
||
## 浏览器兼容
|
||
|
||
> [Omio](https://github.com/Tencent/omi/tree/master/packages/omio) - 兼容老浏览器的 Omi 版本(支持到IE8+和移动端浏览器)
|
||
|
||
|
||
Omi 4.0+ works in the latest two versions of all major browsers: Safari 10+, IE 11+, and the evergreen Chrome, Firefox, and Edge.
|
||
|
||
|
||
|
||
[→ polyfills](https://github.com/webcomponents/webcomponentsjs)
|
||
|
||
```html
|
||
<script src="https://unpkg.com/@webcomponents/webcomponentsjs@2.0.0/webcomponents-bundle.js"></script>
|
||
```
|
||
|
||
## 贡献者们
|
||
|
||
<table><tbody>
|
||
<tr><td><a target="_blank" href="https://github.com/dntzhang"><img width="60px" src="https://avatars2.githubusercontent.com/u/7917954?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/LeeHyungGeun"><img width="60px" src="https://avatars2.githubusercontent.com/u/2471651?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/xcatliu"><img width="60px" src="https://avatars1.githubusercontent.com/u/5453359?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/yanceyou"><img width="60px" src="https://avatars2.githubusercontent.com/u/16320418?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/1921622004"><img width="60px" src="https://avatars1.githubusercontent.com/u/19359217?s=60&v=4"></a></td></tr><tr><td><a target="_blank" href="https://github.com/f"><img width="60px" src="https://avatars0.githubusercontent.com/u/196477?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/pasturn"><img width="60px" src="https://avatars0.githubusercontent.com/u/6126885?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/ghostzhang"><img width="60px" src="https://avatars3.githubusercontent.com/u/194242?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/jayZOU"><img width="60px" src="https://avatars3.githubusercontent.com/u/8576977?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/zhengbao"><img width="60px" src="https://avatars3.githubusercontent.com/u/1736166?s=60&v=4"></a></td></tr><tr><td><a target="_blank" href="https://github.com/vorshen"><img width="60px" src="https://avatars3.githubusercontent.com/u/10334783?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/akira-cn"><img width="60px" src="https://avatars3.githubusercontent.com/u/316498?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/loo41"><img width="60px" src="https://avatars3.githubusercontent.com/u/28095677?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/rainmanhhh"><img width="60px" src="https://avatars3.githubusercontent.com/u/13862623?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/nbompetsis"><img width="60px" src="https://avatars3.githubusercontent.com/u/11991105?s=60&v=4"></a></td></tr><tr><td><a target="_blank" href="https://github.com/CodeFalling"><img width="60px" src="https://avatars1.githubusercontent.com/u/5436704?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/daizhan"><img width="60px" src="https://avatars0.githubusercontent.com/u/5318547?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/validalias"><img width="60px" src="https://avatars1.githubusercontent.com/u/44221844?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/elfman"><img width="60px" src="https://avatars3.githubusercontent.com/u/948001?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/132yse"><img width="60px" src="https://avatars3.githubusercontent.com/u/12951461?s=60&v=4"></a></td></tr><tr><td><a target="_blank" href="https://github.com/NoBey"><img width="60px" src="https://avatars3.githubusercontent.com/u/10740524?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/hilkbahar"><img width="60px" src="https://avatars2.githubusercontent.com/u/12161006?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/KidneyFlower"><img width="60px" src="https://avatars1.githubusercontent.com/u/16027183?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/zhangsanshi"><img width="60px" src="https://avatars1.githubusercontent.com/u/3771933?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/xland"><img width="60px" src="https://avatars0.githubusercontent.com/u/2980915?s=60&v=4"></a></td></tr><tr><td><a target="_blank" href="https://github.com/winstonxie"><img width="60px" src="https://avatars3.githubusercontent.com/u/16422642?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/ritschwumm"><img width="60px" src="https://avatars2.githubusercontent.com/u/547138?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/kahwee"><img width="60px" src="https://avatars3.githubusercontent.com/u/262105?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/alanyinjs"><img width="60px" src="https://avatars3.githubusercontent.com/u/25688258?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/electerious"><img width="60px" src="https://avatars2.githubusercontent.com/u/499088?s=60&v=4"></a></td></tr><tr><td><a target="_blank" href="https://github.com/nanhupatar"><img width="60px" src="https://avatars1.githubusercontent.com/u/27266016?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/ilker0"><img width="60px" src="https://avatars1.githubusercontent.com/u/23511412?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/MrGrabazu"><img width="60px" src="https://avatars2.githubusercontent.com/u/6928672?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/Tagir-A"><img width="60px" src="https://avatars2.githubusercontent.com/u/23556586?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/mahmut-gundogdu"><img width="60px" src="https://avatars2.githubusercontent.com/u/2217899?s=60&v=4"></a></td></tr><tr><td><a target="_blank" href="https://github.com/howel52"><img width="60px" src="https://avatars3.githubusercontent.com/u/9854818?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/tcdona"><img width="60px" src="https://avatars1.githubusercontent.com/u/352931?s=60&v=4"></a></td><td><a target="_blank" href="https://github.com/eyea"><img width="60px" src="https://avatars0.githubusercontent.com/u/17020223?s=60&v=4"></a></td></tr></tbody></table>
|
||
|
||
## 维护者
|
||
|
||
- [@f](https://github.com/f)
|
||
- [@LeeHyungGeun](https://github.com/LeeHyungGeun)
|
||
- [@dntzhang](https://github.com/dntzhang)
|
||
- [@xcatliu](https://github.com/xcatliu)
|
||
|
||
任何 Omi 相关问题欢迎联系我们。也可以[加入 Omi QQ 群](https://github.com/Tencent/omi/issues/169)进行讨论交流。
|
||
|
||
## 感谢
|
||
|
||
* [preact](https://github.com/developit/preact)
|
||
* [JSONPatcherProxy](https://github.com/Palindrom/JSONPatcherProxy)
|
||
* [create-react-app](https://github.com/facebook/create-react-app)
|
||
* [JSX](https://github.com/facebook/jsx)
|
||
|
||
## License
|
||
|
||
MIT © Tencent
|