JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://rawgithub.com/melanke/Watch.JS/master/src/watch.js"></script>

JavaScript

//defining our object no matter which way we want
var ex7 = {
    attr1: 0,
    attr2: 1
};

//defining a 'watcher' for the object
watch(ex7, function(){
    alert("some attribute of ex6 changes!")
});

callWatchers(ex7, "attr1"); //invoke the watcher