實現效果圖：

嵌入頁面的滾動選擇器

注意：其中只可放置<picker-view-column/>組件，其他節點不會顯示。

picker-view-column

僅可放置于<picker-view />中，其孩子節點的高度會自動設置成與picker-view的選中框的高度一致

示例代碼：

<view>
 <view>{{year}}年{{month}}月{{day}}日</view>
 <picker-view indicator-style="height: 50px;" style="width: 100%; height: 300px;" value="{{value}}" bindchange="bindChange">
 <picker-view-column>
 <view wx:for="{{years}}" style="line-height: 50px">{{item}}年</view>
 </picker-view-column>
 <picker-view-column>
 <view wx:for="{{months}}" style="line-height: 50px">{{item}}月</view>
 </picker-view-column>
 <picker-view-column>
 <view wx:for="{{days}}" style="line-height: 50px">{{item}}日</view>
 </picker-view-column>
 </picker-view>
</view>

const date = new Date()
const years = []
const months = []
const days = []

for (let i = 1990; i <= date.getFullYear(); i++) {
 years.push(i)
}

for (let i = 1 ; i <= 12; i++) {
 months.push(i)
}

for (let i = 1 ; i <= 31; i++) {
 days.push(i)
}

Page({
 data: {
 years: years,
 year: date.getFullYear(),
 months: months,
 month: 2,
 days: days,
 day: 2,
 year: date.getFullYear(),
 value: [9999, 1, 1],
 },
 bindChange: function(e) {
 const val = e.detail.value
 this.setData({
 year: this.data.years[val[0]],
 month: this.data.months[val[1]],
 day: this.data.days[val[1]]
 })
 }
})

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