下面的代码在indexedDB对象存储中插入了一个todo对象，然后获得了存储对象的副本（见下文），这很好用。
我担心我正在重用一个使用起来可能不安全的事务--因为该事务已经成功了。
我应该为get创建另一个事务吗--或者这是不必要的？

// this is only called after the 'tasks' object store has been opened
    const todoIDB = requestIDB.result
    const transaction = todoIDB.transaction(["tasks"], "readwrite")
    const todoStore = transaction.objectStore("tasks")
    const addRequest = todoStore.add({text:txt_val})
    addRequest.addEventListener("success", ()=>{
      console.log("Added " + "#" + addRequest.result + ": " + txt_val)
      // should I add a new transaction, etc. here?
      const getRequest = todoStore.get(addRequest.result)
      getRequest.addEventListener("success", ()=>{
        console.log("Found " + JSON.stringify(getRequest.result))
      })
    })

以下是一些（有效的）输出（来自Chrome）：

Added #18: aaa
Found {"text":"aaa","id":18}
Added #19: bbb
Found {"text":"bbb","id":19}