localStorage和sessionStorage

localStorage和sessionStorage的区别:

localStorage(本地存储)        大(5M)/cookie(4K)
  1.大：1280倍
  2.localStorage不会被发往服务器
  3.方便

  localStorage/sessionStorage
    localStorage      永久存储
    sessionStorage    会话期存储（浏览器关了就没了）

  localStorage的用法跟json一模一样
    localStorage.a=xxx            设置
    localStorage.a                读取
    delete localStorage.a         删掉
    for in                        遍历

  sessionStorage用法和localStorage一模一样

1.存一个对象进localStorage

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title></title>
    <script>
    let obj={
      name: 'blue',
      age: 18
    };

    localStorage.a=JSON.stringify(obj);

    let obj2=JSON.parse(localStorage.a);
    alert(obj2.name);
    </script>
  </head>
  <body>

  </body>
</html>

 

posted @ 2017-12-17 16:57  逗比煎饼侠  阅读(129)  评论(0)  编辑  收藏  举报