lin absolute 容器 true data wid solid radius AI

以下代碼的缺點：點擊頂部按鈕是直接回到頂部，而不是均勻的滑動至頂部 <scroll-view class="bigWrap" scroll-y="true" scroll-top="{{scrollTop}}" bindscroll="scroll" style="position: absolute; left: 0; top:0; bottom: 0; right: 0;"> <view> <view class=‘li‘>我是第一段</view> <view class=‘li‘>2143124214</view> <view class=‘li‘>2143124214</view> <view class=‘li‘>2143124214</view> <view class=‘li‘>2143124214</view> <view class=‘li‘>2143124214</view> <view class=‘li‘>2143124214</view> <view class=‘li‘>2143124214</view> <view class=‘li‘>2143124214</view> <view class=‘li‘>2143124214</view> <view class=‘li‘>2143124214</view> <view class=‘li‘>2143124214</view> <view class=‘li‘>2143124214</view> <view class=‘li‘>2143124214</view> </view> <view class="com-widget-goTop" bindtap="goTop" wx:if="{{floorstatus}}"> <view class="icon-gotop">頂部</view> </view> </scroll-view> data: { scrollTop: 0 }, goTop: function (e) { this.setData({ scrollTop: 0 }) }, scroll: function (e, res) { // 容器滾動時將此時的滾動距離賦值給 this.data.scrollTop if (e.detail.scrollTop > 500) { this.setData({ floorstatus: true }); } else { this.setData({ floorstatus: false }); } }, .bigWrap{ background:#eee; } .com-widget-goTop { position: fixed; bottom: 125px; right: 5px; background: rgba(0,0,0,0.48); border-radius: 50%; overflow: hidden; z-index: 500; } .com-widget-goTop .icon-gotop{ ">rgba(0,0,0,0.8); display: inline-block; width: 50px; height: 50px; line-height: 50px; font-size: 12px; color: #ffffff; text-align: center; border-radius: 50%; } .li{ height: 200rpx; line-height: 200rpx; background: #ff0000; border-bottom: 1px solid #ffffff; }

小程序-點擊按鈕回到頂部1