1，链接数据库
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script>
window.indexedDB = window.indexedDB ||
window.mozIndexedDB ||
window.webkitIndexedDB ||
window.msIndexedDB;
window.IDBTransaction = window.IDBTransaction ||
window.webkitIDBTransaction ||
window.msIDBTransaction;
window.IDBKeyRange = window.IDBKeyRange ||
window.webkitIDBKeyRange ||
window.msIDBKeyRange;
window.IDBCursor=window.IDBCursor || window.webkitIDBCursor ||window.msIDBCursor;
function connectDatabase(){
var dbName = "indexedDBtest";
var dbVersion = 1;
var idb;
var dbConnect = indexedDB.open(dbName,dbVersion); //打开数据库
dbConnect.onsuccess = function(e){ //是否链接成功，链接成功之后，返回信息
idb = e.target.result;
alert("数据库链接成功")
}
dbConnect.onerror = function(e){
alert("数据库链接失败")
}
}
</script>
</head>
<body>
<input type="button" value="链接数据库" onclick="connectDatabase()">
</body>
</html>
2，数据库版本更新
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script>
window.indexedDB = window.indexedDB ||
window.mozIndexedDB ||
window.webkitIndexedDB ||
window.msIndexedDB;
window.IDBTransaction = window.IDBTransaction ||
window.webkitIDBTransaction ||
window.msIDBTransaction;
window.IDBKeyRange = window.IDBKeyRange ||
window.webkitIDBKeyRange ||
window.msIDBKeyRange;
window.IDBCursor=window.IDBCursor || window.webkitIDBCursor ||window.msIDBCursor;
function versionUpdata(){
var dbName = "indexedDBtest";
var dbVersion = 2;
var idb;
var dbConnect = indexedDB.open(dbName,dbVersion);
dbConnect.onsuccess = function(e){
idb = e.target.result;
alert("数据库链接成功");
}
dbConnect.error = function(){
alert("数据库更新失败")
}
dbConnect.onupgradeneeded = function(e){
idb = e.target.result;
var tx = e.target.transaction;
var oldVersion = e.oldVersion;
var newVersion = e.newVersion;
alert("数据库更新成功"+oldVersion+"--"+newVersion);
}
}
</script>
</head>
<body>
<input type="button" value="链接数据库" onclick="versionUpdata()">
</body>
</html>
时间： 2024-10-13 05:21:15