javascript 24小时弹出一次的代码(利用cookies)

function 3watertuitan(){ 
if (getCookie('3waterpopped')==''){ 
//要执行的代码或一些操作
setCookie("3waterpopped","ok"); //写入cookies表示已经执行过了。 
alert("ok"); 
} 
} 
3watertuitan() 
function setCookie(name, value)     
{ 
    var argv = setCookie.arguments; 
    var argc = setCookie.arguments.length; 
    var expires = (argc > 2) ? argv[2] : null; 
    if(expires!=null) 
    { 
        var LargeExpDate = new Date (); 
        LargeExpDate.setTime(LargeExpDate.getTime() + (expires*1000*3600*24)); 
    } 
    document.cookie = name + "=" + escape (value)+((expires == null) ? "" : ("; expires=" +LargeExpDate.toGMTString())); 
} function getCookie(Name) 
{ 
    var search = Name + "=" 
    if(document.cookie.length > 0) 
    { 
        offset = document.cookie.indexOf(search) 
        if(offset != -1) 
        { 
            offset += search.length 
            end = document.cookie.indexOf(";", offset) 
            if(end == -1) end = document.cookie.length 
            return unescape(document.cookie.substring(offset, end)) 
         } 
    else return "" 
     } 
}

把想要输出的内容，放到3watertuitan()函数里面的判断语句里面即可。