操作session、localStorage、sessionStorage

做个记录  jquery 操作session

// jquery.session.js 简单使用方法

添加数据
    $.session.set('key', 'value')

删除数据
    $.session.remove('key');

获取数据
    $.session.get('key');

清除数据
    $.session.clear();

 //localStorage存值永久有效
    function setItems(){
        var user = {};
        user.name = 'Adam Li';
        user.age  = 25;
        user.home = 'China';
        localStorage.setItem('userinfo',JSON.stringify(user));
    }
    //localStorage取值
    function getItems(){
        var data = JSON.parse(localStorage.getItem('userinfo'));
        console.log("name:"+data.name+'
 age:'+data.age+"
 home:"+data.home);
    }

    //localStorage删除指定键对应的值
    function deleteItem(){
        localStorage.removeItem('userinfo');
        console.log(localStorage.getItem('userinfo'));
    }

if(window.sessionStorage){
        alert('ok');
    }else{
        alert('fail');
    }

    // 设置值
    sessionStorage.setItem('key_a', 1);
    // 取值
    var key_a = sessionStorage.getItem('key_a');
    console.log(key_a);
    // 删除
    sessionStorage.removeItem('key_a');
    console.log(sessionStorage.getItem('key_a'));// null

    sessionStorage.setItem('key_b', 1);
    sessionStorage.setItem('key_c', 2);

    // 清除所有键值
    sessionStorage.clear();
    console.log(sessionStorage.key_b);
    console.log(sessionStorage.key_c);