JSFiddle - React, Tailwind, and code Playground

HTML

<div id="test"></div>

JavaScript

var a ={}; 
var b = Object.create( a );

a.n = 1;
b.m = 2;

var html = ['using for in loop'];
// for in a
for( var i in a ){
    html.push( 'a.'+ i +':' + a[i] );
}

for( var i in b ){
    html.push( 'b.'+ i +':' + b[i] );
}

html.push('JSON stringify');

html.push( JSON.stringify( a ) );
html.push( JSON.stringify( b ) );

document.getElementById('test').innerHTML = html.join('<br />') ;