Custom ajax error message translation

Custom ajax error message translation

I'm using jQuery Validation Plugin v1.16.0 in zend framework 2, I want to display transalted custom message in the jQuery error. My message is converted in chinese from the Form error message but not display properly in front end.
For example my message is : Please enter valid email
Should be like : 请输入有效的电子邮件
But it is now as :  u8bf7u8f93u5165u6709u6548u7684u7535u5b50u90aeu4ef6