我有一个函数，基本上从远程数据库抓取一堆交付作业，并将它们保存到indexeddb中进行离线备份。每次下载作业后，它都会调用addToDatabase（）函数。
如果该日期的作业已经在数据库中，我想用最新的作业覆盖现有的作业，以防在下载数据和交付作业之间的详细信息有任何更新。
在函数的开头我有下面的代码：

let unixTimestamp =  parseInt(Math.round(+new Date()/1000));
   console.log('Database version '+unixTimestamp+' loading.');
   // open our database with the unix timestamp as a version to force onupgradeneeded
   let DBOpenRequest = window.indexedDB.open(storeName,unixTimestamp);

如果我第二次调用它，数据库版本保持不变。
完整功能如下...

function addToDatabase(storeName,date,jobs)
{
  let unixTimestamp =  parseInt(Math.round(+new Date()/1000));
  console.log('Database version '+unixTimestamp+' loading.');
  // open our database with the unix timestamp as a version to force onupgradeneeded
  let DBOpenRequest = window.indexedDB.open(storeName,unixTimestamp);
  DBOpenRequest.onerror = function(event) {
  console.log('Error loading database.');
  };
  DBOpenRequest.onupgradeneeded = function(event)
  {
    console.log('Database version '+unixTimestamp+' initialised.');
    db = event.target.result;
     let transaction = event.target.transaction;
     if(!db.objectStoreNames.contains(date))
     {
       //objectStore does not exist so create it...
       console.log('block 1');
       let store = db.createObjectStore(date,{keyPath: 'id', autoIncrement:true});
       store.transaction.oncomplete =
       function(evt) {
            // Store values in the newly created objectStore.
            let jobObjectStore = db.transaction(date, "readwrite").objectStore(date);
            Object.entries(jobs).forEach((entry) => {
              const [key, value] = entry;
              jobObjectStore.put({
                  id:key,
                  contract:value.contract,
                  runContract:value.runContract,
                  items:value.items,
                });
            });
       }
     }
     else
     {
       console.log('block 2');
       let jobObjectStore = db.transaction(date, "readwrite").objectStore(date);
       // Store values in the existing objectStore.
        Object.entries(jobs).forEach((entry) => {
          const [key, value] = entry;
          jobObjectStore.put({
              id:key,
              contract:value.contract,
              runContract:value.runContract,
              items:value.items,
            });
        });
     }
  }
}

因此，当我第一次调用此函数时，会得到以下控制台输出。

Database version 1650561313 loading.
Database version 1650561313 initialised.
block 1

这和预期的一样，数据库版本是1650561313。但是，当我第二次调用该函数时，我得到了以下控制台输出。我打开的数据库版本号更高，但所需的onupgrade没有被触发，数据库仍然是版本1650561313。

Database version 1650561338 loading.

任何帮助，为什么它不是触发onupgradeneded将不胜感激！