Queres contar o separar?
Código Javascript
:
Ver originalvar str ='as12asd54asd6q7qer4sd321dfs87afa';
var numericStr = str.replace(/[a-z]/gi, '');
var alfaStr = str.replace(/\d/gi, '');
numericStr; //"125467432187"
numericStr.length; // 12
alfaStr; //"asasdasdqqersddfsafa"
alfaStr.length; // 20