formatNum(num) {
　　　　　　//以@符号判断
                if (num.indexOf('@') == -1) {
                    // 手机
                    return num.replace(/^(\d{3})\d{4}(\d+)/, "$1****$2")
                } else {
                    let ss = telsplit('@')[0].length
                    // 邮箱
                    return num.replace(num.substring(ss / 2, num.lastIndexOf("@")), "*****")
                }
            },