JavaScript模块模式实例详解

(function () {
  // 所有的变量和函数只在这个范围内有效
  // 仍然可以使用全局变量
}());

var myNamespace = (function () {
 var myPrivateVar, myPrivateMethod;
 // A private counter variable
 myPrivateVar = 0;
 // A private function which logs any arguments
 myPrivateMethod = function( foo ) {
   console.log( foo );
 };
 return {
  // A public variable
  myPublicVar: "foo",
  // A public function utilizing privates
  myPublicFunction: function( bar ) {
   // Increment our private counter
   myPrivateVar++;
   // Call our private method using bar
   myPrivateMethod( bar );
  }
 };
})();

(function ($, YAHOO) {
  // 这样就可以访问jQuery (as $) 和 YAHOO 库
}(jQuery, YAHOO));

var MODULE = (function () {
  var my = {},
    privateVariable = 1;
  function privateMethod() {
    // ...
  }
  my.moduleProperty = 1;
  my.moduleMethod = function () {
    // ...
  };
  return my;
}());

var MODULE = (function (my) {
  my.anotherMethod = function () {
    // added method...
  };
  return my;
}(MODULE));

var MODULE = (function (my) {
  // add capabilities...
  return my;
}(MODULE || {}));

MODULE.sub = (function () {
  var my = {};
  // ...
  return my;
}());