微信小程序 slider的简单实例
实现效果图：
微信小程序slider应用，可加减的slider控制
<view> <block wx:for="{{controls}}" wx:key="id" wx:for-item="v"> <view> <view>{{v.name}}</view> <view> <text data-id="{{v.id}}" bindtap="minusCount">-</text> <slider bindchange="sliderchange" step="10" value="{{v.value}}" data-id="{{v.id}}" max="{{v.max}}" min="0" wx:if="{{index<3}}" /> <slider bindchange="sliderchange" step="10" value="{{v.value}}" data-id="{{v.id}}" max="{{v.max}}" min="0" wx:if="{{index==3}}" /> <text data-id="{{v.id}}" data-max="{{v.max}}" bindtap="addCount">+</text> </view> </view> </block> </view>
页面结构
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 }) } })