js 正则替换手机号中间四位为****

第一种

var phone = '12332112345'

phone = phone.substr(0, 3) + '****' + phone.substr(7);

console.log(phone); //123****2345

第二种

var phone = '12332112345'

phone = phone.replace(/(\d{3})\d{4}(\d{4})/, '$1****$2');

console.log(phone);  //123****2345