JSFiddle - React, Tailwind, and code Playground

HTML

<div shape="rect" coords="68,108,112,247" id="la">a</div>
<div shape="rect" coords="134,108,174,247" id="ma">b</div>
<div shape="rect" coords="195,108,240,247" id="al">c</div>

JavaScript

[...document.getElementsByTagName('div')].forEach(el=>{
        console.log('ff')
        el.onclick = function(){
            
            document.getElementById(this.id).innerHTML += '!';

        }
    })