本文实例为大家分享了微信小程序页面返回顶部的具体代码，供大家参考，具体内容如下

效果预览：

js部分：

Page({ data: { topNum: 0 }, returnTop: function () { this.setData({ topNum: this.data.topNum = 0 }); }})

wxml部分：

<scroll-view scroll-y scroll-with-animation='true' scroll-top='{{ topNum }}'> <view>1</view> <view>1</view> <view>1</view> <view>1</view> <view>1</view> <view>1</view> <view>1</view> <view>1</view> <view>1</view> <view>1</view></scroll-view><view class='top' catchtap='returnTop'>顶部</view>

wxss部分:

page{ width: 100%; height: 100%;}scroll-view{ height: 100%; width: 100%;}view{ width: 100%; height: 200px; text-align: center; line-height: 200px; font-weight: 600;}view:nth-child(odd){ background-color: red;}.top{ width: 50px; height: 50px; position: fixed; right: 10px; bottom: 10px; z-index: 1; background-color: yellow; color: red; text-align: center; line-height: 50px;}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。