jQuery datepicker 日本語化 まとめ

jQuery UI ThemeRoller のGalleryから選択してダウンロード

CSSとJSの読み込み



$(document).ready(function(){
   $("#date").datepicker({
      dateFormat:"yy年mm月dd日",                                                                       //データ表示形式
      dayNames:["日曜日","月曜日","火曜日","水曜日","木曜日","金曜日","土曜日"],                       //曜日名(dateFormatでDD指定時)
      dayNamesMin:["日","月","火","水","木","金","土"],                                                //曜日名
      dayNamesShort:["日曜","月曜","火曜","水曜","木曜","金曜","土曜"],                           //曜日名(dateFormatでD指定時)
      monthNames:["1月","2月","3月","4月","5月","6月","7月","8月","9月","10月","11月","12月"],     //月名
      monthNamesShort:["1月","2月","3月","4月","5月","6月","7月","8月","9月","10月","11月","12月"],  //月名(dateFormatでM指定時)
      nextText:"次",
      prefText:"前",
      minDate:"-0d"   //選択できる日付の範囲(1y は、1年。1m は、1カ月。1w は、1週間。1d は、1日。)
   });
});

参考URL