function setStorage(key,value){
        if(!window.localStorage){
            alert("浏览器不支持localstorage");
            return false;
        }else{
            var storage=window.localStorage;
            //写入字段
            storage.setItem(key,value);
        }
    }
    function getStorage(key){
        if(!window.localStorage){
            alert("浏览器不支持localstorage");
        }else{
            var storage=window.localStorage;
            var key=storage.getItem(key);
//            console.log(key);
            return key;
        }
}