鐃緒申鐃緒申呂鐃緒申鐃緒申箸鐃緒申董鐃�

IT鐃緒記 - JavaScript 鐃緒申名鐃緒申鐃緒申鐃緒申
鐃緒申鐃緒申椒鐃塾常申鐃粛わ申鐃緒申鐃緒申鐃順き鐃緒申鐃緒申鐃緒申箸覆襦ｏ申鐃緒申鐃緒申鐃宿緒申磴� Firefox 鐃塾鰹申張鐃緒申能鐃緒申離鐃緒申鐃旬ワ申任鐃緒申襦�

鐃緒申鐃緒申鐃�JS鐃緒申鐃塾ワ申泪魅鐃緒申鐃緒申鐃�amachang鐃淑わ申箸砲鐃緒申鐃緒申鐃緒申鐃叔も起鐃緒申抜鐃緒申鐃祝ワ申鐃緒申鐃述￥申鐃緒申鐃薯気わ申鐃緒申鐃緒申鐃緒申未鐃緒申鐃緒申鐃緒申鐃緒申鐃銃�鐃叔はつわ申鐃銃わ申鐃緒申

window['http://d.hatena.ne.jp/amachang/']={}; // URI
(function(){with(this){
  // 鐃緒申鐃緒申鐃祝ワ申鐃緒申鐃宿わ申鐃�
}}).apply(window['http://d.hatena.ne.jp/amachang/']); // URI

鐃緒申鐃緒申呂佞弔鐃緒申鐃�

// Namespace jp.ne.hatena.d.amachang a la Java
if (jp == undefined) jp = {};
if (jp.ne  == undefined) jp.ne = {};
if (jp.ne.hantena  == undefined) jp.ne.hantena = {};
if (jp.ne.hantena.amachang  == undefined) jp.ne.hantena.amachang = {};

鐃緒申律鐃緒申鐃祝わ申襪�鐃緒申

function Namespace(str){
  var ns = str.split('.');
  var here = window;
  for (var i = 0, l = ns.length; i < l; i++){
      if (typeof(here[ns[i]]) == 'undefined') here[ns[i]] = {};
      here = here[ns[i]];
  }
  return here;
}

鐃夙でもし鐃銃わ申鐃緒申鐃銃￥申

new Namespace('jp.ne.hatena.d.amachang');

鐃夙わ申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申覆蕁�

(function(){with(this){

  var hoge     = 'hoge'; // 鐃緒申鐃塾ワ申鐃緒申鐃緒申鐃緒申鐃緒申廼鐃粛�鐃緒申鐃暑シ鐃緒申椒鐃�
  this.fuga    = 'fuga'; // 同鐃緒申名鐃緒申鐃緒申鐃瞬で駈申有鐃緒申鐃暑シ鐃緒申椒鐃�
  window.piyo  = 'piyo'; // 鐃緒申鐃緒申鐃緒申鐃出ワ申廼鐃粛�鐃緒申鐃暑シ鐃緒申椒鐃�

  alert(hoge); // hoge
  alert(fuga); // fuga
  alert(piyo); // piyo

}}).apply(window['http://d.hatena.ne.jp/amachang/']);

鐃緒申function鐃緒申鐃緒申鐃緒申with鐃緒申鐃緒申泙鐃緒申鐃緒申鐃�apply鐃緒申鐃緒申箸鐃緒申鐃緒申鐃祝￥申覆鐃緒申任癲�

var ns = new Namespace('jp.ne.hatena.d.amachang');
var hoge     = 'hoge'; // 鐃緒申鐃塾ワ申鐃緒申鐃緒申鐃緒申鐃緒申廼鐃粛�鐃緒申鐃暑シ鐃緒申椒鐃�
ns.fuga      = 'fuga'; // 同鐃緒申名鐃緒申鐃緒申鐃瞬で駈申有鐃緒申鐃暑シ鐃緒申椒鐃�
window.piyo  = 'piyo'; // 鐃緒申鐃緒申鐃緒申鐃出ワ申廼鐃粛�鐃緒申鐃暑シ鐃緒申椒鐃�

鐃叔わ申鐃緒申鐃塾で￥申鐃緒申鐃緒申鐃曙い鐃緒申頭鐃叔わ申(鐃獣て私自鐃夙わ申鐃緒申鐃緒申鐃曙い鐃祝なっわ申鐃緒申鐃潤し鐃緒申鐃淑わ申鐃塾わ申鐃緒申鐃緒申)鐃緒申鐃夙わ申鐃縦わ申鐃銃わ申鐃暑コ鐃緒申鐃宿になる。

鐃緒申鐃淑みに￥申鐃緒申鐃緒申鐃緒申鐃緒申鐃竣わ申Chapter 10鐃緒申namespace鐃祝逸申鐃銃わ申鐃銃わ申鐃銃￥申鐃巡奨鐃緒申鐃銃わ申鐃緒申里鐃緒申鐃熟りこ鐃緒申鐃緒申鐃緒申鐃祝￥申覆里鐃緒申鐃緒申鼻鐃�typeof(ns) == 'undefined'鐃緒申鐃緒申覆鐃緒申鐃�!ns鐃緒申namespace鐃緒申存鐃緒申判鐃緒申鬚靴討鐃緒申鐃夙わ申鐃緒申鐃緒申鐃緒申鐃殉ワ申鐃緒申鐃緒申鐃緒申鐃夙￥申Namespace pseudoconstructor 鐃熟誌申了廚鐃緒申弔鐃緒申鐃�ns = jp.ne.hatena.d.amachang;鐃緒申鐃緒申鐃緒申造蝓�with鐃熟わ申鐃緒申鐃緒申箸任鐃緒申鐃緒申隼廚鐃緒申鐃�

Dan the Javascripter

鐃宿居申:ns == undefined鐃緒申typeof(ns) == 'undefined'鐃緒申鐃術刻申鐃緒申鐃緒申鐃緒申鐃緒申了鐃重�鐃祝加わ申鐃緒申typeof(ns) == 'undefined'鐃緒申鐃緒申鐃緒申鐃緒申鐃縮互器申鐃緒申鐃緒申發わ申鐃�defined鐃緒申exists鐃緒申鐃淑わ申鐃夙わ申鐃緒申鐃塾もき鐃縦わ申鐃緒申里鐃緒申鐃緒申襦�