swapCase.js

// Using the JavaScript language, have the function SwapCase(str) take the str parameter and swap the case of each character. 
// For example: if str is "Hello World" the output should be hELLO wORLD. Let numbers and symbols stay the way they are. 

// Input = "Hello-LOL"     Output = "hELLO-lol"
// Input = "Sup DUDE!!?"   Output = "sUP dude!!?"

function SwapCase( str ) {
  var swap = '';
  for ( var i = 0; i < str.length; i++ ) {
    if ( str[i] == str[i].toUpperCase() )
      swap += str[i].toLowerCase();
    else
      swap += str[i].toUpperCase();
  }
	
  return swap;
}