1 <script language=javascript> 2 var s='jhdoiweesdds'; 3 var n=(s.split('d')).length-1; 4 document.write(n); 5 </script> 相关文章: 2022-12-23 2022-12-23 2022-12-23 2022-12-23 2022-12-23 2021-11-10