JSFiddle - React, Tailwind, and code Playground

JavaScript

var $body = $('body');

function MetaInfo(){
     this.counter = 0;
     $('<button>Hello</button>').appendTo($body).data('metaInfo', this);
}

MetaInfo.prototype.incrase = function(){
     return ++this.counter;
}

var obj1 = new MetaInfo();
var obj2 = new MetaInfo();

$body.on('click', 'button', function(){
  var obj = $(this).data('metaInfo');
  alert(obj.incrase());
});