JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#">Click me!</a>
    
    <script>
    var a = document.body.children[0]
    
    a.onclick = function() {
      alert('in onlick')
      this.setAttribute('href', 'lala')
      alert('out onclick')
      return false
    }
    
    function onpropchange() {
      alert('onpropchange')
    }
    
    if (a.addEventListener) { // FF, Opera
      a.addEventListener('DOMAttrModified', onpropchange, false)
    }
    if (a.attachEvent) { // IE 
      a.attachEvent('onpropertychange', onpropchange)
    } 
    </script>