正则表达式(陆续添加)

//车牌
 var express = /^[京津沪渝冀豫云辽黑湘皖鲁新苏浙赣鄂桂甘晋蒙陕吉闽贵粤青藏川宁琼使领A-Z]{1}[A-Z]{1}[警京津沪渝冀豫云辽黑湘皖鲁新苏浙赣鄂桂甘晋蒙陕吉闽贵粤青藏川宁琼]{0,1}[A-Z0-9]{4}[A-Z0-9挂学警港澳]{1}$/;
//手机号中间4位替换成星号*

"15812345678".replaceAll("(\\d{3})\\d{4}(\\d{4})", "$1****$2");