1
如果我的indexeddb中的数据格式为{名称:'example1'}与keypath - 名称和一切都按字母顺序排列,我怎么能得到最后添加的记录不是按字母顺序?indexeddb获取最后添加的记录非字母顺序
这是我的数据库
var openRequest = indexedDB.open("database",1);
openRequest.onupgradeneeded = function(e) {
var thisDB = e.target.result;
if(!thisDB.objectStoreNames.contains("add")) {
var store = thisDB.createObjectStore("add",{keyPath: 'name'});
}
if(!thisDB.objectStoreNames.contains("del")) {
var store = thisDB.createObjectStore("del",{keyPath: 'name'});
}
}
openRequest.onsuccess = function(e) {
console.log("running onsuccess");
db = e.target.result;
var transaction = db.transaction(["add"],"readonly");
var store = transaction.objectStore("add");
...
,这是获得最后一个项目的init(这是错误的 - 它需要最后一个记录开始用 'Z' 字母):
var openRequest = indexedDB.open('database');
var type = true;
openRequest.onsuccess = function(e) {
db = e.target.result;
if(type) {
var transaction = db.transaction(msg.type,"readwrite");
var store = transaction.objectStore(msg.type);
var cursorRequest = store.openCursor(null,"prev");
cursorRequest.onsuccess = function(e) {
var result = e.target.result;
if(result) {
var key_t = result.key;
var del_request = result.delete();
del_request.onsuccess = function() {
console.log('Deleted '+key_t);
};
}
}
}
}
的感谢!