正则--千位分割符,姓名加密，电话号码加密

var separator=(num)=>{
    if(!num){
        return '0.00';
    };
    let str = parseFloat(num).toFixed(2);
    return str && str
        .toString()
        .replace(/(\d)(?=(\d{3})+\.)/g, function($0, $1) {
            return $1 + ",";
        });
}

separator(386485473.99) //"386,485,473.99"

 

姓名加密
"慕容某霜".replace(/^(.+).(.)$/, "$1*$2");

"李某平".replace(/^(.+).(.)$/, "$1*$2");

电话号加密

    '13947421022'.replace(/(\d{3})\d*([0-9]{4}/), "$1****$2");