JSFiddle - React, Tailwind, and code Playground

by dshilkret

JavaScript

function concatenateString(stringA, stringB) {
	return stringA + stringB;
}
alert(concatenateString("Hi", " there"));

function modifyVar(stringA, stringB) {
	var result = stringA + stringB;
	stringA.valueOf = stringA.toSource = stringA.toString = function() {
		return result;
	};
}
var stringA = Object('HI');
modifyVar(stringA, ' there');
alert(stringA);