JSFiddle - React, Tailwind, and code Playground

by whelkaholism

JavaScript

var o = {
};
var peek = function(o) 
{ 
	var a = (typeof(o) != 'undefined' && o != null ? (o + '') : '').split(',');   
  var res = a.pop(); 
  return res != '' ? res : null; 
};

console.log('r', o.s, peek(null));