const titleCase = str => str.replace(/\S+\g/, s => s.charAt(0).toUpperCase() + s.slice(1).toLowerCase());

/*

const titleCase = str => str.toLowerCase().split(" ").map(s => s.charAt(0).toUpperCase() + s.slice(1)).join(" ");

*/

/* function titleCase(str) {

return str.toLowerCase().split(" ").map(function (s) {

return s.charAt(0).toUpperCase() + s.slice(1);

}).join(" ");

}

*/

/*

function titleCase(str) {

stringArray = str.toLowerCase().split(" ");

for (var i = 0; i < stringArray.length; i++) {

stringArray[i] = stringArray[i].charAt(0).toUpperCase() + stringArray[i].slice(1);

}

return stringArray.join(" ");

}

*/

titleCase("I'm a little tea pot"); // should return a string.

titleCase("I'm a little tea pot"); // should return "I'm A Little Tea Pot".

titleCase("sHoRt AnD sToUt"); // should return "Short And Stout".

titleCase("HERE IS MY HANDLE HERE IS MY SPOUT");

// should return "Here Is My Handle Here Is My Spout".