【Kevin Learn 小程序】--＞picker-view

效果图

属性

参考：​​picker-view​​

代码

1. app.js

//app.js
App({
  onLaunch: function () {
    console.log('App Launch')
  },
  onShow: function () {
    console.log('App Show')
  },
  onHide: function () {
    console.log('App Hide')
  },
  globalData: {
    hasLogin: false
  }
})

2. app.json

{
  "pages": [
    "pages/picker-view/picker-view"
  ],
  "window": {
    "backgroundTextStyle": "light",
    "navigationBarBackgroundColor": "#fff",
    "navigationBarTitleText": "WeChat",
    "navigationBarTextStyle": "black"
  },
  "style": "v2",
  "sitemapLocation": "sitemap.json"
}

3. picker-view.js

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: [0, 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[2]]
    })
  }
})

4. picker-view.json

{
  "navigationBarTitleText": "picker-view 组件"
}

5. picker-view.wxml

<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}}" wx:key="*this" style="line-height: 50px">{{item}}年</view>
        </picker-view-column>
        <picker-view-column>
            <view wx:for="{{months}}" wx:key="*this" style="line-height: 50px">{{item}}月</view>
        </picker-view-column>
        <picker-view-column>
            <view wx:for="{{days}}" wx:key="*this" style="line-height: 50px">{{item}}日</view>
        </picker-view-column>
    </picker-view>
</view>