cookie小结

2019-09-15 16:52:32 作者：互联网
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    
</body>
<script>

//子可以看到父，但是父不可以看到子；
     console.log(typeof document.cookie); //string
     console.log(document.cookie === ""); //true
// 增
     document.cookie = "pass=123121";  //d多了一条cookie
     var d = new Date();
     d.setDate(d.getDate()+3);
     document.cookie = "user=admin;expires="+d;  //设置销毁的时间
  // 一个document.cookie只能设置一条cookie
     document.cookie = "b=20;path=/1908"; //path设置cookie在的指定位置.字可以设置父，但是父不能设置子；
     document.cookie = "b=20;";
     document.cookie = "c=30;path=/1908;expires=" + d;
     document.cookie = "d=40;expires="+d;
// 改
     document.cookie="user=root";   //上面的admin会被改成root
     document.cookie = "b=world;path=/1908";
     var d = new Date();
     d.setDate(d.getDate()+5);
     document.cookie = "c=30;path=/1908;expires="+d;
 // 删：
    var e = new Date();
    e.setDate(e.getDate()-3);
    document.cookie="user=root;expires="+e; //user这条cookie的销毁时间设置成三天前，那么这条cookie就相当于被删除了
    var d = new Date();
     d.setDate(d.getDate()-1);
     document.cookie = "a=10;path=/1908;expires="+d;
     document.cookie = "b=10;path=/1908;expires="+d;

//查
    console.log(document.cookie)

</script>
</html>
标签：setDate,expires,cookie,1908,path,document,小结
来源： https://www.cnblogs.com/hy96/p/11523354.html