IE中的jQUery插件问题

Question

我已经创建了我的jQuery自定义插件;

(function($){

$.fn.userForm = function(){
var element = this;
var UserDataObj = {
name:"John",
email:"john@example.com",
phone:"9999999999",
desc:"some description"
}


        this.supports_html5_storage = function() 
        {

        };


        this.saveFormData = function(param)
        {


        }


        if (this.supports_html5_storage())
        {

        }
        else
        {

        }



};

})(jQuery);

现在我正试图在我的插件中调用一个方法;

var myPlugin = new $.fn.userForm();
myPlugin.saveFormData(".formFieldUserData");

由于某种原因，执行时IE中的代码中断 var myPlugin = new $ .fn.userForm（）;

如何解决此问题？