sessionStorageをつかってみる - Qiitafunction storageAvailable(type) { try { var storage = window[type], x = '__storage_test__'; storage.setItem(x, x); storage.removeItem(x); return true; } catch(e) { return e instanceof DOMException && ( // everything except Firefox e.code === 22 || // Firefox e.code === 1014 || // test name field too, because code might not be present // everything except Firefox e.name === 'QuotaExceededError' ||
