日期选择器：
```
shortcuts: \[{
text: '今天',
onClick(picker) {
const date \= new Date(new Date().toLocaleDateString());
picker.$emit('pick', date);
}
}, {
text: '昨天',
onClick(picker) {
const date \= new Date(new Date().toLocaleDateString());
date.setTime(date.getTime() \- 3600 \* 1000 \* 24);
console.log(date)
picker.$emit('pick', date);
}
}, {
text: '一周前',
onClick(picker) {
const date \= new Date(new Date().toLocaleDateString());
date.setTime(date.getTime() \- 3600 \* 1000 \* 24 \* 7);
picker.$emit('pick', date);
}
}\]
```
