tdesign让按钮固定在底部

wxml

<scroll-view scroll-y="true" refresher-enabled="true" refresher-threshold="45" refresher-triggered="{{triggered}}" bindrefresherrefresh="heading" bindscrolltolower="footer" style="height:{{winHeight-201}}px;">

内容

</scroll-view>

<t-button>按钮

js

onShow(){

    this.setData({ winHeight: wx.getWindowInfo().screenHeight });

  },