//網上摘抄的代碼段lua
//-(BOOL)isValidateEmail:(NSString *)email {spa
// NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9._%]+\\.[A-Za-z]{2,4}";orm
// NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];it
// return [emailTest evaluateWithObject:email];email
//}date
.是鏈接單個的字符數字標點符號等,+是鏈接兩個項目,{}是設置長度,如{1,9}設置的是1~9之間這個區間長度項目