代码示例

<template><view class="updata" @click="handleup" :style="{bottom: bottomType+'px'}" ><i class="iconfont icon-huidaodingbu"></i></view>
</template><script>
export default {name: "backTop",
props: {bottomType: {type: Number,default: 140,required: false}},mounted(){},methods:{handleup() {uni.pageScrollTo({scrollTop: 0})},}
}
</script><style lang="scss">
// 回到顶部
.updata {position: fixed;right:5px;bottom: 140px;z-index: 99;
i {color: rgba(5, 142, 187, 0.6);font-size: 40px;
}
}
</style>

其他页面引用

 <back-top :bottom-type="60" ></back-top>