在IndexedDb中使用Date作为索引并使用它进行排序

let request = indexedDB.open("myDB", 1);

request.onupgradeneeded = function(event) {
  let db = event.target.result;
  let store = db.createObjectStore("myStore", { keyPath: "id" });
  store.createIndex("dateIndex", "date");
};

request.onsuccess = function(event) {
  let db = event.target.result;
  let transaction = db.transaction("myStore", "readwrite");
  let store = transaction.objectStore("myStore");
  
  let data = { id: 1, date: new Date(), value: "example" };
  let addRequest = store.add(data);
  
  addRequest.onsuccess = function(event) {
    console.log("Data added successfully");
  };
};

request.onsuccess = function(event) {
  let db = event.target.result;
  let transaction = db.transaction("myStore", "readonly");
  let store = transaction.objectStore("myStore");
  let index = store.index("dateIndex");
  
  let range = IDBKeyRange.lowerBound(new Date(2022, 0, 1));
  let cursorRequest = index.openCursor(range, "prev");
  
  cursorRequest.onsuccess = function(event) {
    let cursor = event.target.result;
    if (cursor) {
      console.log(cursor.value);
      cursor.continue();
    }
  };
};