JSFiddle - React, Tailwind, and code Playground

HTML

<button type="button">click</button>

JavaScript

var checkObject = function() {
    this.checkName = function(){
    
    };
    
    this.checkEmail = function() {
    
    };
    
    this.checkPassword = function() {
    	alert('')
    };
};


var a = new checkObject();
a.checkPassword();