-
Notifications
You must be signed in to change notification settings - Fork 0
/
idb.html
159 lines (128 loc) · 4.66 KB
/
idb.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
<!DOCTYPE html>
<html>
<head>
<style>
body {
color: #222;
font: 14px Arial;
}
body a {
color: #3D5C9D;
text-decoration: none;
}
</style>
<script>
var html5rocks = {};
var indexedDB = window.indexedDB || window.webkitIndexedDB ||
window.mozIndexedDB;
if ('webkitIndexedDB' in window) {
window.IDBTransaction = window.webkitIDBTransaction;
window.IDBKeyRange = window.webkitIDBKeyRange;
}
html5rocks.indexedDB = {};
html5rocks.indexedDB.db = null;
html5rocks.indexedDB.onerror = function(e) {
console.log(e);
};
html5rocks.indexedDB.open = function() {
var request = indexedDB.open("todos");
request.onsuccess = function(e) {
var v = "1.99";
html5rocks.indexedDB.db = e.target.result;
var db = html5rocks.indexedDB.db;
// We can only create Object stores in a setVersion transaction;
if (v!= db.version) {
var setVrequest = db.setVersion(v);
// onsuccess is the only place we can create Object Stores
setVrequest.onerror = html5rocks.indexedDB.onerror;
setVrequest.onsuccess = function(e) {
if(db.objectStoreNames.contains("todo")) {
db.deleteObjectStore("todo");
}
var store = db.createObjectStore("todo",
{keyPath: "timeStamp"});
html5rocks.indexedDB.getAllTodoItems();
};
}
else {
html5rocks.indexedDB.getAllTodoItems();
}
};
request.onerror = html5rocks.indexedDB.onerror;
}
html5rocks.indexedDB.addTodo = function(todoText) {
var db = html5rocks.indexedDB.db;
var trans = db.transaction(["todo"], IDBTransaction.READ_WRITE);
var store = trans.objectStore("todo");
var data = {
"text": todoText,
"timeStamp": new Date().getTime()
};
var request = store.put(data);
request.onsuccess = function(e) {
html5rocks.indexedDB.getAllTodoItems();
};
request.onerror = function(e) {
console.log("Error Adding: ", e);
};
};
html5rocks.indexedDB.deleteTodo = function(id) {
var db = html5rocks.indexedDB.db;
var trans = db.transaction(["todo"], IDBTransaction.READ_WRITE);
var store = trans.objectStore("todo");
var request = store.delete(id);
request.onsuccess = function(e) {
html5rocks.indexedDB.getAllTodoItems();
};
request.onerror = function(e) {
console.log("Error Adding: ", e);
};
};
html5rocks.indexedDB.getAllTodoItems = function() {
var todos = document.getElementById("todoItems");
todos.innerHTML = "";
var db = html5rocks.indexedDB.db;
var trans = db.transaction(["todo"], IDBTransaction.READ_WRITE);
var store = trans.objectStore("todo");
// Get everything in the store;
var keyRange = IDBKeyRange.lowerBound(0);
var cursorRequest = store.openCursor(keyRange);
cursorRequest.onsuccess = function(e) {
var result = e.target.result;
if(!!result == false)
return;
renderTodo(result.value);
result.continue();
};
cursorRequest.onerror = html5rocks.indexedDB.onerror;
};
function renderTodo(row) {
var todos = document.getElementById("todoItems");
var li = document.createElement("li");
var a = document.createElement("a");
var t = document.createTextNode(row.text);
a.addEventListener("click", function() {
html5rocks.indexedDB.deleteTodo(row.timeStamp);
}, false);
a.textContent = " [Delete]";
li.appendChild(t);
li.appendChild(a);
todos.appendChild(li)
}
function addTodo() {
var todo = document.getElementById("todo");
html5rocks.indexedDB.addTodo(todo.value);
todo.value = "";
}
function init() {
html5rocks.indexedDB.open();
}
window.addEventListener("DOMContentLoaded", init, false);
</script>
</head>
<body>
<ul id="todoItems"></ul>
<input type="text" id="todo" name="todo" placeholder="What do you need to do?" style="width: 200px;" />
<input type="submit" value="Add Todo Item" onclick="addTodo(); return false;"/>
</body>
</html>