js cookies实现简单统计访问次数

  

复制代码 代码如下:

  <script type="text/javascript">

  if(getCookie("num")){

  var nn=parseInt(getCookie("num"));

  setCookie("num",++nn);

  }else{

  setCookie("num",1);

  }

  function getCookie(name){

  var str=document.cookie.split(";");

  for(i=0;i<str.length;i++){

  var str2=str[i].split("=")

  if(str2[0].replace(/\s(.*)\s/,"$1")==name){

  return str2[1];

  }

  }

  }

  function setCookie(name,value){

  var Days=30;

  var exp = new Date();

  exp.setTime(exp.getTime() + Days*24*60*60*1000);

  document.cookie = name + "="+ escape(value) +";expires"+ exp.toGMTString();

  }

  alert("您是第"+getCookie("num")+"次访问");

  /*String.prototype.Trim=function(){

  return this.replace(/\s(.*)\s/,"$1");

  }

  String.prototype.alert2=function(str){

  alert("我是alert2!!!哈哈哈哈 实际内容是:"+str);

  }

  var aa="";

  aa.alert("liugang");*/

  </script>