indexeddb

Delete method is not working for Indexed DB HTML5… It returns success but the record is not deleted

由 倖福魔咒の 提交于 2019-12-23 07:43:52
问题 Another problem that I am getting with Indexed DB for HTML5, using Desktop Chrome, is that I can not delete a record from an object store. The onsuccess event is triggered but the record is still there... My ID is a time stamp just because I wanted to achieve a working app faster. I hardcoded it but it still does not work. It is really strange because the onsuccess event is triggered... The part of the code that "does it" is the following: try { if (localDatabase != null && localDatabase.db !

What is the best way to create various IndexedDB objectStores within the same script?

由 半腔热情 提交于 2019-12-23 05:35:06
问题 For my IndexedDB I'm pulling various Ajax requests that will provide the data to the objectStores. Since transactions are asynchronous how should I chain the creation of the objectStores? I'm thinking in doing it like this: 1- Pull all the Ajax requests in the beginning of the script. 2- Request to open the DB. 3- In the onsuccess handler open the first transaction to create the first objectStore and insert the respective data. 4- Call the oncomplete event on the first transaction to create a

Callback execution sequence in Javascript, Retrieving from IndexeddB

由 情到浓时终转凉″ 提交于 2019-12-23 04:44:04
问题 If I've a code like this: testJSCallbacks(); function testJSCallbacks(){ var i = 0; for (i = 0; i < 5; i++){ console.log("Step 1 "+i); foo(i, myCB); } } function foo(key, fnCB){ //retrieve png image blob from indexedDB for the key 'key'. Assume that the database is //created and started properly var getRequest = transaction.objectStore("store").get(key); getRequest.onsuccess = function (event) { var result = event.target.result; if(result){ console.log("Step 2 " + key + " Found"); }else{

Safari shows indexed column undefined on indexeddb polyfill. How to retrieve data using indexes in safari

由 醉酒当歌 提交于 2019-12-23 03:17:48
问题 I m getting the index colums on safari as undefined Here is the snippet i ve written. I am using parshurams indexeddb and shim jquery plugin. .indexedDB("database_name", { "schema" : "1" : function(transaction){ // Examples of using the transaction object var obj2 = transaction.createObjectStore("store2",{"keyPath":"index"}); obj2.createIndex("price"); } } }); var sampledata={ index:'1', firstName: 'Aaron', lastName: 'Powell', answer: 42, price:100 }; var randomnumber=Math.floor(Math.random()

Metro IndexedDB, browsing the database

由 六眼飞鱼酱① 提交于 2019-12-22 17:41:18
问题 I am trying to store data in a "Metro" App for Windows 8 using IndexedDB. I would like to be able to browse the database (to monitor that my operations modify the data as intended). So my question is; Is there any way of viewing the actual database of a metro app (IE10)? (something like in Chrome Dev Tools (Resources > IndexedDB)) Regards 回答1: Not that I know, but my linq2indexeddb library has a viewer in it. That way you can inspect the content of you database while debugging. The nuget

How to get multiple key value from IndexedDb objectstore

由 ε祈祈猫儿з 提交于 2019-12-22 12:18:14
问题 Can somebody suggest how to get multiple key value from IndexedDB objectstore ? I have done multiple options, but didn't work none. Created indexedDb here $provide.value('dbModel', { name: 'TestDB', version: '1', instance: {}, objectStoreName: { dashboards: 'Appointment' }, upgrade: function (e) { var db = e.target.result; if (!db.objectStoreNames.contains('Appointment')) { var calendarobj = db.createObjectStore('Appointment', { keyPath: 'AppointmentId' }); calendarobj.createIndex(

Why does calling indexedDB.deleteDatabase prevent me from making any further transactions?

由 夙愿已清 提交于 2019-12-22 06:00:35
问题 If I go into my browser's console (I'm using Chrome) right now, on this very page, and type indexedDB.open("MyDB").onsuccess = function(e) { console.log("success"); }; I immediately get a "success" message in my console. I can do this as many times as I like, and it works fine. But then if I type indexedDB.deleteDatabase("MyDB").onsuccess = function(e) { console.log("success"); }; I get no "success" message back. Not only that, but if I then try and call .open again, I also get no "success"

javascript addEventlistener “click” not working

由 南楼画角 提交于 2019-12-22 05:54:16
问题 I am working on making a To-Do list as a Chrome new tab extension. My html file: <head> </head> <body> <h2 id="toc-final">To Do List</h2> <ul id="todoItems"></ul> <input type="text" id="todo" name="todo" placeholder="What do you need to do?" style="width: 200px;"> <button id="newitem" value="Add Todo Item">Add</button> <script type="text/javascript" src="indexdb.js"></script> </body> </html> Previously the button element was an input type with onClick(), but Chrome does not allow that. So I

Uncaught InvalidStateError: Failed to execute 'transaction' on 'IDBDatabase': A version change transaction is running

由 淺唱寂寞╮ 提交于 2019-12-22 04:42:47
问题 i must admit that i am very new to indexedDB I wrote a simple code of indexedDB and it is as followed: function go(){var req = window.indexedDB.open("Uploader", 1), db; req.onerror=function(e){console.log('Error')}; req.onsuccess = function(e){db=e.target.result;}; req.onupgradeneeded = function(e){console.log(db); db=e.target.result;db=e.target.result; var os = db.createObjectStore('Files', {keyPath:"files"}); os.createIndex('text', 'text_file', {unique:false}) var trans = db.transaction([

Counting the number of records in an object store in indexedDB

由 狂风中的少年 提交于 2019-12-22 04:09:09
问题 I want to basic count the number of records in my indexedDB database. Currently my code looks like Javascript var transaction = db.transaction(["data"], "readonly"); var objectStore = transaction.objectStore("data"); var cursor = objectStore.openCursor(); var count = objectStore.count(); console.log(count); I would love for this to say output just 3, but instead i get. Output IDBRequest {onerror: null, onsuccess: null, readyState: "pending", transaction: IDBTransaction, source: IDBObjectStore
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