Detailed explanation of WeChat applet components: picker scroll selector

picker scroll selectorComponent description:

#picker:

Scroll selector, now supports three selectors, distinguished by the mode attribute ,

are the ordinary selector (mode = selector), time selector (mode = time), and date selector (mode = date),

The default is a normal selector.

picker rolling selector sample code runs as follows:

#The following is the WXML code

##

<view class="page">
  <view class="page__hd">
    <text class="page__title">picker</text>
    <text class="page__desc">选择器</text>
  </view>
  <view class="page__bd">
    <view class="section">
      <view class="section__title">地区选择器</view>
      <picker bindchange="bindPickerChange" value="{{index}}" range="{{array}}">
        <view class="picker">
          当前选择：{{array[index]}}
        </view>
      </picker>
    </view>
    <view class="section">
      <view class="section__title">时间选择器</view>
      <picker mode="time" value="{{time}}" start="09:01" end="21:01" bindchange="bindTimeChange">
        <view class="picker">
          当前选择: {{time}}
        </view>
      </picker>
    </view>
    <view class="section">
      <view class="section__title">日期选择器</view>
      <picker mode="date" value="{{date}}" start="2015-09-01" end="2017-09-01" bindchange="bindDateChange">
        <view class="picker">
          当前选择: {{date}}
        </view>
      </picker>
    </view>
  </view>
</view>

The following is the JS code

##

Page({
  data: {
    array: ['中国', '美国', '巴西', '日本'],
    index: 0,
    date: '2016-09-01',
    time: '12:01'
  },
  bindPickerChange: function(e) {
    console.log('picker发送选择改变，携带值为', e.detail.value)
    this.setData({
      index: e.detail.value
    })
  },
  bindDateChange: function(e) {
    this.setData({
      date: e.detail.value
    })
  },
  bindTimeChange: function(e) {
    this.setData({
      time: e.detail.value
    })
  }
})

The following is the WXSS code

##

.page {
    min-height: 100%;
    flex: 1;
    background-color: #FBF9FE;
    font-size: 32rpx;
    font-family: -apple-system-font,Helvetica Neue,Helvetica,sans-serif;
    overflow: hidden;
}
.page__hd{
    padding: 50rpx 50rpx 100rpx 50rpx;
    text-align: center;
}
.page__title{
    display: inline-block;
    padding: 20rpx 40rpx;
    font-size: 32rpx;
    color: #AAAAAA;
    border-bottom: 1px solid #CCCCCC;
}
.page__desc{
    display: none;
    margin-top: 20rpx;
    font-size: 26rpx;
    color: #BBBBBB;
}
.picker{
  padding: 26rpx;
  background-color: #FFFFFF;
}
.section{
    margin-bottom: 80rpx;
}
.section__title{
    margin-bottom: 16rpx;
    padding-left: 30rpx;
    padding-right: 30rpx;
}

Picker rolling selector’s
Main properties:

Normal selector (mode = selector)

Attribute nameArray[ ]When mode is selector, range is validvalueNumber0When mode is selector, it is a number, indicating which number in the range is selected, starting from 0. bindchangeEventHandle##Time selector: (mode = time)

Type	Default value	Description	##range
	The change event is triggered when the value changes, event.detail = {value: value }

Attribute name

TypeDefault valueDescription represents the selected time, the format is "hh :mm” represents the beginning of the valid time range, the string format is” hh:mm” represents the end of the valid time range. The string format is "hh:mm"The change event is triggered when the value changes, event.detail = {value: value}

value

String

start

String

end

String

bindchange

EventHandle

Date picker: (mode = date)

valueString0 represents the selected date in the format of "YYYY-MM-DD" startString represents the start of the valid date range, the string format is "YYYY-MM-DD" endStringIndicates the end of the valid date range, the string format is "YYYY-MM-DD"fieldsStringdayValid values ​​are year, month, day, indicating the granularity of the selectorbindchangeEventHandleThe change event is triggered when the value changes, event.detail = {value: value}

##Attribute name	Type	Default value	Description

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