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>