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keykeyjs

v1.0.9

Published

基于redux设计思想的web端键盘按键监听工具

Downloads

2

Readme

logo

基于redux设计思想的web端键盘按键监听工具。

live demo - 请打开控制台

设计思想

design.png

for Test & Dev & Build

npm i
npm run dev
npm run build

for use

install

npm i keykeyjs --save

or

<script src="https://statis.hduzplus.xyz/keykeyjs/index.js"></script>

usage

/*
1. define reducer
action: {
  type: '{key} +/-' // key - 按键, +/- - 按下 / 弹起,
  payload: Event    // 原生事件
}
*/
const reducers = (action) => {
  switch (action.type) {
    case 'ArrowLeft +': // 按下左方向键,事件会持续触发
      console.log('press ArrowLeft');
      break;
    case 'ArrowLeft -': // 弹起左方向键,事件在弹起时触发一次
      console.log('not press ArrowLeft');
      break;
    case 's +':
      console.log('stop listen 2s');
      keykeyjs.stopListen(2000); // keykeyjs提供了暂停监听函数
      break;
    case 'a +':
      console.log('stop listen until async finish');
      keykeyjs.stopListen((restart) => {  // 暂停监听函数的参数可以传入函数,函数中包含默认参数restart,调用restart之后会继续开始监听
        console.log('start async action')
        setTimeout(() => {
          console.log('finish!')
          restart()
        }, Math.random() * 3000)
      });
      break;
  }
}

/*
2. launch
*/
keykeyjs.launch({
  targetDOM: document, // 设置监听时焦点所在的dom
  reducers: [reducers], // 可以传入reducers数组,
  // reducer: reducer  // 也可以传入单一reducer
  preventDefaultKeys: ['ArrowRight'], // 当event.key的值等于'ArrowRight'时,会preventDefault
  //preventDefaultKeys: function() {} // 也可以传入函数, 返回值必须为数组
})