[セットトップ]3.2 Javascript:クライアント-クッキーを探索する

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JavaScript html クッキー

のホームページです

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Cookie</title>
<!--    js  -->
<script type="text/javascript" src="Cookie.js">//  src html    js  </script>
</head>
<body">
<div onClick="setCookie()">
  cookie
</div>
<div onClick="readCookike()">
  cookie
</div>
<DIV></DIV>
<div onClick="clearCookie()">
  cookie
</div>
</body>
</html>

jsコード

// JavaScript Document

//javascriipt + cookie =     、            
//cookie          
//  cookie             
//cookie          ，      ，       ，       
//
//cookie         ,            
//  ,cookie          ,      
//cookie   4kb     ,     
//    cookie    
//
function setCookie() {
    //navigator            
    //          cookie      
    if(!navigator.cookieEnabled)
    {
        alert("cookieEnabled is false");
        return;
        }

    //     cookie  cookie      
    var cookieID="uName";
    var cookieValue="shiqiqi";
    var date=5*365;

    //  writeCookie  
    writeCookie(cookieID,cookieValue,date);
    alert("write the cookie");
    }

function writeCookie(name,value,days) {
    var date=new Date();//      
    date.setTime(date.getTime()+(days*24*60*60*1000));//setTime()        Date   。getTime()       1970   1   1        。
    var expires="; expires=" +date.toGMTString();//expires      
    document.cookie=name+"="+value+expires+";path=/";//  cookie              
    }

function readCookike() {
    var name="uName";//cookie  
    var seachName=name+"=";
    var cookies=document.cookie.split(";");//        Cookies
    if(!cookies)//if          ,     false,   true
    {
        alert("no cookies");
        return;
        }
    for(var i=0;i<cookies.length;i++)//     Cookies
    {
        var c=cookies[i];//     Cookies
        while(c.charAt(0)==" ")//charAt(index)            
        {
            //          
            c=c.substring(1,c.length);//substring(start,stop)                       。
            }

        if(c.indexOf(seachName)==0)//indexOf()                          
        {
            //   cookie       seachName    
            //  cookie  
            c=c.substring(seachName.length,c.length);
            alert(c);
            }
            else{
                alert(null);
                }
        }
    }

function clearCookie() {
    var name="uName";
    writeCookie(name,"",-1);
    //    cookie,      "",         -1

    alert("clear the cookie");
    }

Unity 3 dでタイマーの使用