一个简单的js计数器(web储存)。

 <span id="countspan"></span>
 <a href="#" onclick="countNumber();">点击</a>
 <script type="text/javascript">
 if(!localStorage.countAll){
     localStorage.countAll = 0;
 }
 document.getElementById('countspan').innerHTML = localStorage.countAll;
 function countNumber(){
     localStorage.countAll++;
     document.getElementById('countspan').innerHTML = localStorage.countAll;
 }
 </script>