requests.onerror = function(event) {
					console.log('資料庫開啟報錯！');
				}
				requests.onupgradeneeded = function(event) {
					console.log('資料庫升級');
					var db = requests.result;
					if (!db.objectStoreNames.contains("person")) {
						console.log("建立person物件倉庫");
						var objectStore = db.createObjectStore("person", {
							keyPath: "id",
							autoIncrement: true
						});
						console.log("建立索引");
						objectStore.createIndex("name", "name", {
							unique: false
						});
						objectStore.createIndex("email", "email", {
							unique: true
						})
					}
				}
			} else {
				alert("；瀏覽器版本過低")
			}