var myInstance =  (function() {
  var privateVar = 'Test';

  function privateMethod () {
    // ...
  }

  return { // public interface
    publicMethod1: function () {
      // all private members are accesible here
        alert(privateVar);
    },publicMethod2: function () {
    }
  };
})();

如果我在函数中添加新内容,会有什么不同.从萤火虫看来,似乎两个物体是相同的.据我了解,两者都应该强制执行单身模式.

var myInstance =  new (function() {
  var privateVar = 'Test';

  function privateMethod () {
    // ...
  }

  return { // public interface
    publicMethod1: function () {
      // all private members are accesible here
        alert(privateVar);
    },publicMethod2: function () {
    }
  };
})();