Stores the length of str
var N = str . length ; for ( var i = 0 ; i < N ; i ++ ) { if ( str [ i ] === " " str [ i ] === " " str [ i ] === " " str [ i ] === " " str [ i ] === " " ) { document . write ( str [ i ] . toUpperCase ( ) ) ; } else { document . write ( str [ i ] ) ; } } }