javascript – 异步使用IndexedDB

加载数据并将其存储在indexeddb数据库中.我经常有数据库崩溃并失去对它的访问权限.
请给我一个如何异步使用indexeddb的解决方案！

我现在使用的示例代码：

var dataTotal = 0;
var threads = 6;

//openIndexeddbConnection();

function start(total){

dataTotal = total;
  for (var i = 0; i < threads; i++) {
    loadData(i);
  }
}

function loadData(dataNum){
  var dataNext = dataNum + threads;
  if(dataNext > dataTotal){
    //checkEnd();
    return;
  }

  $.ajax({
    url: baseUrl,data: {offset: dataNum},success: function (data) {
      successData(dataNext,data);
    },type: 'GET'
  });
}

function successData(dataNext,data){
  var dataArray = data.split(';');

  saveData(dataArray);

  loadData(dataNext);
}

function saveData(dataArray){

  putItem();
  function putItem(i) {
    var count = i || 0;
    if(dataArray.length <= i){
      return;
    }

    var transaction = Indexeddb.transaction([dataTableName],"readwrite");
    transaction.onsuccess = function (event) {
      //continue
      putItem(count);
    };
    var objectStore = transaction.objectStore(dataTableName);

    var request = objectStore.add({data: dataArray[count++]});
  }
}

async function saveData(dataArray) {
    const db = await idb.open('YourDB',currentVersion,upgradeFunction);
    const tran = await db.transaction('StoreName','readwrite');
    const store = tran.objectStore('StoreName');

    // This will add the items sequentially
    for(let item of dataArray) {
        await store.add({data:item});
    }
}