update

indexedb.js

var objectStore = db.transaction(["files"], "readwrite").objectStore("files");
var request = objectStore.get(1);
request.onsuccess = function(event) {
    var data = event.target.result;
    data.name = 'this is kitten cat'
     var requestUpdate = objectStore.put(data);
   requestUpdate.onerror = function(event) {
     // Hata Anında
   };
   requestUpdate.onsuccess = function(event) {
     // İşlem Başarılı
   };
}