JSFiddle - React, Tailwind, and code Playground

HTML

<div class="output"> </div>

JavaScript

var x = "abc",
    y = new String("XYZ");

var results = [],
    i = 0;
    
results[i++] =  x instanceof String;
results[i++] =  x instanceof Object
results[i++] =  y instanceof String;
results[i++] = (x.constructor === y.constructor);


$.each(results,function(i,val){
    $('.output').append(val.toString()).append('<br />');
});