JSFiddle - React, Tailwind, and code Playground

HTML

<p>Make me alert "Hello!"</p>
<button>Test</button>

JavaScript

var MyObject = {
    testValue: "Hello!",
    
    testFunction: function() {
        alert(this.testValue);
    },
    
    init: function(button) {
        button.click(testFunction());
    }
}

var buttonInstance = new MyObject;
var button = $('button');
buttonInstance.init(button);