微信小程式12行js程式碼自己寫個滑塊功能(推薦)
阿新 • • 發佈:2020-07-17
效果圖如下所示
.wxml
<view class="jindu" bindtap="cuin"> <view class="xian" style="width:{{towards}}px;"> <view class="yuan" bindtouchmove='touchMove'></view> </view> </view> <view class="bfb">{{percen}}%</view>
.wxss
page{ background-color:#ddd; } .jindu{ margin: 50px calc((100% - 300px) / 2) 0; width: 300px; float: left; height: 6rpx; background-color: #fff; position: relative; } .xian{ width: 0%; float: left; height: 6rpx; background-color: #1989FA; position: relative; transition: all 0.1s; } .yuan{ border-radius: 50%; background: #1989FA; position: absolute; right: 0rpx; display: block; margin: calc((6rpx - 14rpx)/2); width: 14rpx; height: 14rpx; } .bfb{ width: 300px; margin: 10px calc((100% - 300px) / 2) 0; float: left; }
.js
Page({ data: { towards: 0,percen:0,kuan:0,},onLoad:function(options){ this.setData({ kuan: parseInt((wx.getSystemInfoSync().windowWidth - 300) / 2) }) },cuin:function(e){ this.setData({ towards: (e.detail.x - this.data.kuan) > 300 ? 300 : (e.detail.x - this.data.kuan),percen: (e.detail.x / (300 / 100)) < 1 ? 0 : parseInt(e.detail.x / (300 / 100)),}) },touchMove: function (e) { if (e.touches.length == 1) { var moveX = e.touches[0].clientX; var towards = (moveX - this.data.kuan) > 300 ? 300 : (moveX - this.data.kuan) this.data.percen = (towards / (300 / 100)) < 1 ? 0 : parseInt(towards / (300 / 100)) this.setData({ towards: towards,percen: this.data.percen }) } },})
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