0
您好,我想爲我的phonegap構建一個本地數據庫,以便用戶可以脫機使用它。如何在索引數據庫中存儲一個mongodb數組集合
我在創建數據庫的角度函數中有這個。
function Database() {
return {
create: function (itemDocs) {
var db = null;
var request = indexedDB.open("myDB", 1);
request.onsuccess = function (event) {
db = event.target.result;
console.log("DB loaded successfully");
};
request.onerror = function (event) {
console.log(event)
};
request.onupgradeneeded = function (event) {
db = event.target.result;
console.log("DB initiliazed/created");
//create collections
db.createObjectStore("items", {keyPath: "_id"});
//create documents
var transaction = db.transaction(["items"], "readwrite");
var items = transaction.objectStore("items");
items.add(itemDocs);
};
}
}
}
的itemDocs持有的MongoDB集合(這是一個對象數組),我想該集合存儲IndexedDB的數據庫中有問題的IM是,我得到這個惱人的錯誤。
Uncaught InvalidStateError: Failed to execute 'transaction' on 'IDBDatabase': A version change transaction is running.