private property solution

private-names.js

define(function (require) {
    // 参考http://wiki.ecmascript.org/doku.php?id=harmony:private_name_objects
    // 在不支持private names的现在，使用字符串来表示，日后能很方便地切换成private names
    var names = {
        handleSubmit: '_handleSubmit',
        doValidate: '_doValidate'
    };
    
    var exports = {};
    
    exports[names.handleSubmit] = function () { 
        // ...
        this[names.doValidate]();
    };
    
    // 公有和保护方法不变
    exports.validate = function () {};
});

最后是要这样吧。感觉有点烦
exports[name.handleSubmit] = function () {
// ...
thisname.doValidate;
};