Hagith
9/18/2013 - 11:41 AM

indexedDB_example.html

indexedDB_example.html
content_copyfile_download
<!DOCTYPE html>
<html>

<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script>
var db;

// https://developer.mozilla.org/en/IndexedDB/Using_IndexedDB
var indexedDB = window.indexedDB || window.webkitIndexedDB || window.mozIndexedDB || window.msIndexedDB;
var IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction;

$(document).ready(function() {

	var openRequest = indexedDB.open("notes",5);

		//handle setup
		openRequest.onupgradeneeded = function(e) {

			console.log("running onupgradeneeded");
			var thisDb = e.target.result;

			//temp delete
			//thisDb.deleteObjectStore("note");

			//Create Note
			if(!thisDb.objectStoreNames.contains("note")) {
				console.log("I need to make the note objectstore");
				var objectStore = thisDb.createObjectStore("note", { keyPath: "id", autoIncrement:true });  
				objectStore.createIndex("title", "title", { unique: false });
			}


		}

		openRequest.onsuccess = function(e) {
			db = e.target.result;

			db.onerror = function(event) {
			  // Generic error handler for all errors targeted at this database's
			  // requests!
			  alert("Database error: " + event.target.errorCode);
			  console.dir(event.target);
			};

			displayNotes();

		}

		function displayNotes() {

			var transaction = db.transaction(["note"], IDBTransaction.READ);  
			var content="<ul>";

			transaction.oncomplete = function(event) {
	  			console.log("All done!");
	  			$("#noteList").html(content);
			};

			transaction.onerror = function(event) {
			  // Don't forget to handle errors!
			  console.dir(event);
			};

			var objectStore = transaction.objectStore("note");

			objectStore.openCursor().onsuccess = function(event) {  
			  var cursor = event.target.result;  
			  if (cursor) {  
			  	content += "<li data-key=\""+cursor.key+"\"><span class=\"label\">"+cursor.value.title+"</span>";
			  	content += " <a class=\"delete\">[Delete]</a>";
			  	content +="</li>";
			    cursor.continue();  
			  }  
			  else {  
			  	content += "</ul>";
			  	console.log("Done with cursor");
			  }  
			};  

		}

		$("#noteList").on("click", "a.delete", function(e) {
			e.preventDefault();
			var thisId = $(this).parent().data("key");
			console.log("delete "+thisId);

			var request = db.transaction(["note"], IDBTransaction.READ_WRITE)  
			                .objectStore("note")  
			                .delete(thisId);  
			request.onsuccess = function(event) {  
				displayNotes();
			};  

			return false;
		});

		$("#noteList").on("click", "li", function() {
			var thisId = $(this).data("key");
			var transaction = db.transaction(["note"]);  
			var objectStore = transaction.objectStore("note");  
			var request = objectStore.get(thisId);  
			request.onerror = function(event) {  
			  console.dir(event);
			};  
			request.onsuccess = function(event) {  
			  var note = request.result;
			  $("#noteDetail").html("<h2>"+note.title+"</h2><p>"+note.body+"</p>");
			};  
		});

		//TEMP TO REMOVE
		$("#addNoteButton").click(function() {

			var title = $("#title").val();
			var body = $("#body").val();
			
			var request = db.transaction(["note"], IDBTransaction.READ_WRITE)
							.objectStore("note")
							.add({title:title,body:body});

			request.onsuccess = function(event) {
				$("#title").val("");
				$("#body").val("");
				displayNotes();
			};

			return false;
		});

});

</script>
<style>
#noteList li span.label {
	cursor:pointer;
}
a.delete {
	color:red;
	font-size:.6em;
	cursor: pointer;
}
</style>
</head>

<body>

	<h2>Notes</h2>

	<div id="noteList"></div>
	<div id="noteDetail"></div>

	<h2>Add Note</h2>
	<form>
	<input type="text" id="title" placeholder="Title" required><br/>
	<textarea id="body" placeholder="Enter body here..." required></textarea>
	<p>
	<button id="addNoteButton">Save Note</button>
	</p>
	</form>

</body>
</html>

<!-- test change -->