例:var str = '12345678';
str.replace(/(d{3})d{2}(d{3})/, '$1**$2');
效果:123**678;
private get tuominComp() { return (mobileNo: any) => { return mobileNo.replace(/(d{3})d{4}(d{1})/, '$1****$2'); }; }
详情参考:http://blog.mingsixue.com/effect/JS-phone-to-asterisk.html