JSFiddle - React, Tailwind, and code Playground

HTML

<div id="info"></div>

JavaScript

Object.prototype.typeString = function(){
   return Object.prototype.toString.call(this);
};
var type = {
    number: 5,
    regexp: /foo/,
    string: "text",
    object: {x:0,y:0},
    func: function(){ return ""; }
//    bool: true;
}
for(p in type){
    if(type.hasOwnProperty(p)){
        $("#info").append(p+': '+ type[p].typeString() +"<br>");
    }
}