按ID更新IndexedDB [英] IndexedDB update by id

问题描述

我正在尝试更新我的indexedDB记录，但出现此错误

I'm trying update my indexedDB records but I get this error

DataError:提供给操作的数据不符合要求. 源文件

DataError: Data provided to an operation does not meet requirements. Source File

我已经尝试过此但没有用

这是我的功能:

function updNotes(text, timestamp, blob)
{
var obj = {text: text, timestamp: timestamp};
if (typeof blob != 'undefined')
obj.image = blob;
store = getObjectStore("notes", 'readwrite');
objKeyRange = IDBKeyRange.only(+objtoedit);
req = store.openCursor(objKeyRange);
req.onsuccess = function(evt){
  var cursor = evt.target.result;
  console.log(cursor.key);
  //do the update
  var objRequest = cursor.update(obj);
  objRequest.onsuccess = function(ev){
    console.log('Success');
    };
  objRequest.onerror = function(ev){
    console.log('Error');
    };
  };
  req.onerror = function(evt){
    console.log('Error');
  };

任何人都可以帮助我解决此问题吗?

Anyone can help me to fix this ?

最诚挚的问候

推荐答案

我知道如何做到这一点. 此功能解决了我的问题.

I figure out how to do this. This function solved my problem.

function updNotes(id, text, timestamp, blob)
{
console.log(id);
store = getObjectStore("notes", 'readwrite');
req = store.get(+id);
req.onsuccess = function(evt){
  var data = evt.target.result;
  data.text = text;
  data.timestamp = timestamp;
  if (typeof blob != 'undefined')
  data.image = blob;
  //do the update
  var objRequest = store.put(data);
  objRequest.onsuccess = function(ev){
    console.log('Success in updating record');
    };
  objRequest.onerror = function(ev){
    console.log('Error in updating record');
    };
  };
  req.onerror = function(evt){
    console.log('Error in retrieving record');
  };


}

这篇关于按ID更新IndexedDB的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！