使用JAVAScript 来检查Email 是否格式正确

            var reEml = /^[\w\-\.]+@[a-z0-9]+(\-[a-z0-9]+)?(\.[a-z0-9]+(\-[a-z0-9]+)?)*\.[a-z]{2,4}$/i;
            var isOk = reEml.test(ClientTextBoxEmail.GetText());

            if (isOk == false)
            {
                alert("Email格式不正确！");
                return;
            }