HeiDi

第一题 ```js document.cookie ``` 第二题 ```js document.cookie = ‘userid=1’ ``` 第三题 ```js document.cookie = 'userid=1; expires=' + new Date(time * 1000 + (24 * 60 * 60 * 1000)).toUTCString() ```...

```js let backTop = document.getElementById('backTop') let scrollFunction = (box) => { box.onscroll = () => { let scrollT = box.scrollTop || document.documentElement.scrollTop || document.body.scrollTop let clientH = box.clientHeight || document.documentElement.clientHeight...

[在线DOM](https://codepen.io/miaomiaolin/pen/joeLJr?editors=0110) ``` js const currEvent = { down: 'mousedown', move: 'mousemove', up: 'mouseup' }; let down = false, isActive = false, boxs = [], startCX, startCY; const frag = document.createDocumentFragment();...

[在线DOM](https://codepen.io/miaomiaolin/pen/PvpXOG) ```html 00:00 00:00 ``` ```css .audio-wrap { display: flex; align-items: center; padding: 10px; height: 56px; box-sizing: border-box; border-radius: 28px; background: #f1f3f4; } .audio-time:nth-child(2):after { content: '/'; margin: 0 5px;...