localstorage跟sessionstorage

<script type="text/javascript">
        function cunchu1(){
            var arr = [ 1, 2, 3 ];
            localStorage.setItem("temp", arr); //存入 参数： 1.调用的值 2.所要存入的数据 
            console.log(localStorage.getItem("temp"));//输出
        }
        function cunchu2(){
            //JSON对象转JSON字符串
            var obj = {"a": 1,"b": 2};
            obj = JSON.stringify(obj); //转化为JSON字符串
            localStorage.setItem("temp2", obj);
        }
        function qingkong(){
            localStorage.clear()
        }
        function shanchu(){
            localStorage.removeItem("temp");　
        }
        function huoqu1(){
            alert(localStorage.getItem("temp"));
        }
        function huoqu2(){
            var oo = JSON.parse(localStorage.getItem("temp2"));
            alert(oo.a);
        }
    </script>