Ajax无刷新技术forJSP 运用Ajax后台提交验证表单无刷新回响-No Refresh Technology forJSP Ajax Submit a verification form using Ajax without refreshing the background response

Ajax实现异步提交验证注册表单，验证数据库然后验证表单-Ajax to achieve asynchronous submit to verify registration form, verify that the database and then verify that the form