JS cookie 用来识别用户(设置、获取)

来源：互联网发布：unity3d游戏引擎编辑：程序博客网时间：2024/05/02 03:11

<html><head><script type="text/javascript">function getCookie(c_name){if (document.cookie.length>0)  {  c_start=document.cookie.indexOf(c_name + "=")  if (c_start!=-1)    {     c_start=c_start + c_name.length+1     c_end=document.cookie.indexOf(";",c_start)    if (c_end==-1) c_end=document.cookie.length    return unescape(document.cookie.substring(c_start,c_end))    }   }return ""}function setCookie(c_name,value,expiredays){var exdate=new Date()exdate.setDate(exdate.getDate()+expiredays)document.cookie=c_name+ "=" +escape(value)+((expiredays==null) ? "" : ";expires="+exdate.toGMTString())}function checkCookie(){username=getCookie('username')if (username!=null && username!="")  {alert('Welcome again '+username+'!')}else   {  username=prompt('Please enter your name:',"")  if (username!=null && username!="")    {    setCookie('username',username,365)    }  }}</script></head><body onLoad="checkCookie()"></body></html>

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