JSFiddle - React, Tailwind, and code Playground

JavaScript

var a = {'hi':'there'};
delete a;
console.log(a);
delete a.hi
console.log(a);

function testParam(obj)
{
	delete obj
}

testParam(a);
console.log(a);

window.a = {'hi':'there'};
delete window.a;
console.log(window.a);