你好，PurePeace！

// 在页面钩子 mounted() 处调用此函数，增加按键监听事件watchKeyEvent () { const setKeyStatus = (keyCode, status) => { switch (keyCode) { case 16: if (this.onShfit === status) return console.log('shif', status ? '按下' : '抬起') this.onShfi.

主要使用了es6语法：async，awaitfunction sleep(ms) { return new Promise(resolve => setTimeout(resolve, ms));}async function doSomething() { await sleep(3000); console.log('已经等待了3秒！！');}// ...