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miniprogram-setup

v0.1.4

Published

小程序支持 setup 选项

Readme

背景

在小程序中实现「组合式 API」的库已经有不少,比如 vue-miniwx-setup,它们都是使用 Vue3 的响应式库实现的。但是,Vue3 的响应式 API 特别复杂,我数了一下,暴露出来的竟然有 50 多个 API,当然我不是说它不好用,只是要下很大的功夫才能用好。

于是我就想,有没有更简单的方式实现「组合式 API」的效果,甚至不需要增加任何 API 就能实现?于是就创建了 miniprogram-setup 这么个项目,现在还是试验阶段。

安装

直接在项目目录下运行以下命令。

npm install miniprogram-setup

然后在小程序开发者工具中点击「构建 npm」。

image.png

一个简单的例子

import { ComponentWithSetup, onDetached, onReady } from 'miniprogram-setup'

ComponentWithSetup({
  // 完全兼容原生写法
  properties: {
    default: Number
  },

  // 可以访问 properties 的值和绑定到组件实例上的 API,
  // 注意:在 setup 中不能访问 data 和 method 中的值,
  // 这是有意做的一层隔离。
  setup(props, { triggerEvent }) {
    let count = props.default

    // 状态更改会自动更新视图
    const handleClick = () => {
      count++

      // 触发一个事件
      triggerEvent('update', count)
    }

    // 组件挂载时运行
    onReady(() => {
      console.log('ready')
    })
    // 组件销毁时运行
    onDetached(() => {
      console.log('detached')
    })

    return () => ({
      count,
      handleClick
    })
  },
})

对应的 wxml 文件:

<button class="btn" bindtap="handleClick">{{count}}</button>

实际的效果可以点击查看这个代码片段

理念

目前,只需使用原生的 Javascript 且不需要 Vue 那样复杂的响应式 API ,就在小程序中实现了响应性,相比于 Vue,上手的门槛要小很多。

简单就是我的理念。😂

如果你对这个项目感兴趣欢迎提 Issue

注意:现在还是试验阶段,请不要在生产环境中使用。