数字类型
certificatecodecopy = certificatecode.replace(/^(.{6})(?:d+)(.{4})$/, "$1****$2");所有类型
enginenocopy = engineno.replace(/^(.{2})(?:w+)(.{1})$/, "$1****$2");
enginenocopy = engineno.replace(/^(.{4})(?:w+)(.{4})$/, "$1****$2");