capitalize method

capitalize.js

String.prototype.capitalize = function() {
  return this.toString().toLowerCase().replace(/\b[a-z]/g, function(letter) {
    return letter.toUpperCase();
  })
}

CoffeeScript

String::capitalize = ->
  @toString().toLowerCase().replace /\b[a-z]/g, (letter) ->
    letter.toUpperCase()

• usage

str = 'hoge'
str.capitalize()  // 'Hoge'

str = 'hoge fuga piyo'
str.capitalize()  // 'Hoge Fuga Piyo'

str = 'hoge-fuga-piyo'
str.capitalize()  // 'Hoge-Fuga-Piyo'