jSpreadsheet plugin StatusBar (Free) :

Select range of cells and consult status bar to bottom table

plugins: [
        { name:'statusBar', plugin:jss_statusbar },
],

Download full version Documentation

get started to use this plugin with this CDN :

<script src="https://cdn.jsdelivr.net/gh/GBonnaire/jspreadsheet-plugins-and-editors@latest/plugins/JSSV8/src/statusbar/index.js"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/GBonnaire/jspreadsheet-plugins-and-editors@latest/plugins/JSSV8/src/statusbar/style.css" type="text/css" />