uniapp返回键-金沙1005

<view class="go-top" :style="{ 
      'display':(istop===true? 'block':'none')}">
	<image src="../../static/img/top.png" @click="top" mode="widthfix" />
view>

data() { 
   
	return { 
   
		istop: false,
	}
},
methods: { 
   
	top() { 
    //回到顶部
		uni.pagescrollto({ 
   
			scrolltop: 0,
			duration: 300
		})
	},
	onpagescroll(e) { 
    //根据距离顶部距离是否显示回到顶部按钮
		if (e.scrolltop > 200) { 
    //距离大于200时显示
			this.istop = true
		} else { 
    //距离小于200时隐藏
			this.istop = false
		}
	}
}

.go-top { 
   
	position: relative;
	display: none; image { 
   
		position: fixed;
		right: 30rpx;
		top: 80%;
		width: 100rpx;
		height: 100rpx;
		line-height: 100rpx;	
	}
}