微信小程序 slider的简单实例

<view class="control-w ">  <block wx:for="{{controls}}" wx:key="id" wx:for-item="v">   <view class="slide-item">    <view class="itemName">{{v.name}}</view>    <view class="slidewrap">     <text class="s-con" data-id="{{v.id}}" bindtap="minusCount">-</text>     <slider class="slide" bindchange="sliderchange" step="10" value="{{v.value}}" data-id="{{v.id}}" max="{{v.max}}" min="0" wx:if="{{index<3}}" />     <slider class="slide" bindchange="sliderchange" step="10" value="{{v.value}}" data-id="{{v.id}}" max="{{v.max}}" min="0" wx:if="{{index==3}}" />     <text class="s-con" data-id="{{v.id}}" data-max="{{v.max}}" bindtap="addCount">+</text>    </view>   </view>  </block> </view>

Page({ data: {  controls: [   {    id: 1,    name: '功能一',    value: 30,    max: 60   },   {    id: 2,    name: '功能二',    value: 30,    max: 60   },   {    id: 3,    name: '功能三',    value: 30,    max: 60   },   {    id: 4,    name: '功能四',    value: 50,    max: 100   }  ] },  // 控制加 addCount: function (event) {  let data = event.currentTarget.dataset  let controls = this.data.controls  let control = controls.find(function (v) {   return v.id == data.id  })  let control1 = controls.find(function (v) {   return v.max == data.max  })　　  if (control.value > control1.max)   return  control.value += 10;  this.setData({   'controls': controls  }) }, // 控制减 minusCount: function (event) {  let data = event.currentTarget.dataset  let controls = this.data.controls  let control = controls.find(function (v) {   return v.id == data.id  })  if (control.value <= 0)   return  control.value -= 10;  this.setData({   'controls': controls  }) }, //拖动 sliderchange: function (e) {  let data = e.currentTarget.dataset  let controls = this.data.controls  let control = controls.find(function (v) {   return v.id == data.id  })  this.setData({   'controls': controls  })  }})