HTML indexedDB数据库—简单示例

     

  indexedDB数据库的基本概念:在HTML5中,新增一种被叫作“indexedDB”的数据库,该数据库是一种存储在客户端本地的NoSQL数据库。

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>Title</title>
 6     <script>
 7         window.indexedDB=window.indexedDB || window.webkitIndexedDB || window.mozIndexedDB || window.msIndexedDB;
 8         window.IDBTransaction= window.IDBTransaction || window.webkitIDBTransaction ||  window.msIDBTransaction;
 9         window.IDBKeyrange=window.IDBKeyrange || window.webkitIDBKeyrange ||window.msIDBKeyrange;
10         window.IDBCursor=  window.IDBCursor ||  window.webkitIDBCursor ||  window.msIDBCursor;
11 
12         function CreateObjectStore() {
13             var dbName = "indexedDBtest";
14             var dbVersion = 3;
15             var idb;
16             var dbConnect = indexedDB.open(dbName,dbVersion);
17             dbConnect.onsuccess = function (e) {
18                 idb = e.target.result;
19                 alert("数据库链接成功");
20             };
21             dbConnect.onerorr = function () {
22                 alert("链接数据库失败");
23             }
24             dbConnect.onupgradeneeded = function (e) {
25                 idb = e.target.result;
26                 var name = "user";
27                 var optionalParameters = {
28                     keyPath:"userid",
29                     autoIncrement:false
30                 };
31                 var store = idb.createObjectStore(name,optionalParameters);
32                 alert("对象仓库创建成功");
33             }
34         }
35     </script>
36 </head>
37 <body>
38     <input type="button" value="创建仓库" onclick="CreateObjectStore()">
39 </body>
40 </html>

来得效果:

图片 1

 

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