Title case a sentence

Use the JS operation to ensure that the first letter of each word of the string is capitalized and the remainder lowercase.

function titlecase (str) {  var arr = Str.split ("");   var newarray = [];    for  (var i = 0; i < arr.length; i++) {    var newstr = Arr[i].slice (0,1). toUpperCase () + Arr[i].slice (1). toLowerCase ();    Newarray.push (NEWSTR);  }   return newarray.join ("");} Titlecase ("I ' m a Little tea pot");

is still the practice for split, and the use of slice (),

And then the use of toLowerCase () and toUpperCase () to make sense of the difference between the former and toLocaleLowerCase (), toLocaleUpperCase ()

Title case a sentence