Javascript/Math.abs()

function s1Func(){
	var s1Str = -1;
	s1Str = Math.abs(s1Str);
	console.log(s1Str);
}

var s2Btn = document.getElementById("s2Btn");
var s2Bool = true;
s2Btn.addEventListener("click", function(){
  console.log(Math.abs(s2Bool));
  console.log(Math.abs(!s2Bool))
});