JSFiddle - React, Tailwind, and code Playground

JavaScript

var a = 1;
function myFunction(){
	++a;
	return true;
}

// Alert pops up.
if (myFunction() && a === 2) {
	alert("Hello, world!")
}

// Alert does not pop up.
if (a === 3 && myFunction()) {
	alert("Hello, universe!")
}