localStorage存储和读取表单

问题如题，怎样用localStorage存储一个表单数据，主要是不知道怎样用JSON存储，求大神指教！

http://blog.csdn.net/my_yang/article/details/7955523

localstorage本身就是键值对，跟JSON是对应的

 var printStorageBody = function(){
    $("body").html("");
    for(var i=0;i<localStorage.length -1;i++)
        $("body").append(i + " : " + localStorage.getItem(localStorage.key(i)) + "<br />");
};

memories = localStorage.getItem('memories') ?
              JSON.parse(localStorage.getItem('memories')) : 
              [];
memories.push(myMemory);
localStorage.setItem('memories', JSON.stringify(memories));