uniapp 返回顶部小组件

日常用到的小组件，分享一个，简单又便捷

点击查看代码

/**
* 名称：返回顶部
*/
<template>
	<view :class="top_flag == true ? 'gotop' : 'gotop hide'" @tap="toTop">
		<i class="iconfont">&#xe6f5;</i>
	</view>
</template>

<script>
	export default {
		data: function() {
			return {
				scrollTop: 0
			}
		},
		props: {
			top_flag: {
				type: Boolean
			}
		},
		methods: {
			// 返回顶部
			toTop: function() {
				uni.pageScrollTo({
					scrollTop: 0,
					duration: 500   //动画效果
				})
			}
		}
	}
</script>

<style lang="scss">
	.gotop {
		width: 88rpx;
		height: 88rpx;
		position: fixed;
		bottom: calc(230rpx + env(safe-area-inset-bottom));
		right: 20rpx;
		border-radius: 50%;
		z-index: 995;
		background: rgba(255, 255, 255, .85);
		box-shadow: 0 2px 8px 0 rgba(0, 0, 0, .16);
		display: flex;
		align-items: center;
		justify-content: center;
		border-radius: 50%;
		box-sizing: border-box;
		transition: transform .3s;

		.iconfont {
			font-size: 42rpx;
		}
	}

	.hide {
		transform: translate3d(100px, 0, 0);
	}
</style>