https://static.xxx.com/activity/review/1746525272362kzrjtd.jpg

https://static.xxx.com/activity/review/1746525272362kzrjtd.jpg?imageMogr2/thumbnail/!5p

https://static.xxx.com/activity/review/1746525272362kzrjtd.jpg?imageMogr2/thumbnail/!3p

useEffect(() => {
  // 預加載圖像
  const imageLoader = new BatchImageLoader({ batchSize: 10 });
  const imageUrls = current.reviews ? current.reviews.map(url => scaleImg(url)) : [];
  // 批量加載
  imageUrls.length > 0 && imageLoader.loadImagesBatch(imageUrls)
      .then((results: ImageLoadResult[]) => {
        setImgLoading(false); // 關閉加載中的狀態
      })
      .catch((error: Error) => {
        console.error('批量加載失敗:', error);
  });
  return () => {
    imageLoader.clearPendingRequests(); //銷毀請(qing)求
    setImgLoading(true); // 開啟加載中(zhong)的狀態(tai)
  }
}, [current])

const itemRender = (originNode: React.ReactElement, file: UploadFile, fileList:UploadFile[], actions: {
    download: () => void;
    preview: () => void;
    remove: () => void;
  }) => {
    return (
      <div className="ant-upload-list-item-container">
        <div className="ant-upload-list-item ant-upload-list-item-done">
        {file.status === 'uploading' ? (
          <div style={{width: '100%', textAlign:'center'}}>
            文件上傳中(zhong)<Progress percent={file.percent} showInfo={false} size="small" strokeWidth={2}/>
          </div>
        ) : 
          <span className="ant-upload-list-item-thumbnail">
            <img 
              src={file.thumbUrl} 
              alt={file.name} 
              className="ant-upload-list-item-image" 
              loading='lazy' 
              onError={e => onImgError(e, file.thumbUrl)}
            />
          </span>
        }
          <div className="ant-upload-list-item-actions">
            {/* 預覽按鈕 */}
            <a onClick={actions.preview}>
              <EyeOutlined />
            </a>
            {/* 刪除按鈕 */}
            <a onClick={actions.remove}>
              <DeleteOutlined />
            </a>
          </div>
        </div>
      </div>
    );
  }

// 預覽(lan)圖像發生錯誤(wu)時的事件 data-retried
const onImgError = (e:SyntheticEvent, src:string|undefined) => {
    const img = e.target as HTMLImageElement;
    // 只(zhi)重新加載一次(ci)
    if (!img.dataset.retried) {
      img.dataset.retried = 'true';
      src && (img.src = src);
      console.error('重新加載', src);
    }
}

https://static.xxx.com/activity/review/1757929803424ukyomp.jpg?imageMogr2/thumbnail/!3p net::ERR_HTTP2_PROTOCOL_ERROR 200 (OK)

<img src={item.thumbUrl} loading='lazy' />

{
  width:'100%';
  height: 45;
  object-fit: 'cover';
  border: 2px solid #a0d911;
}

<img 
 style={{ width: '100%', height: '60vh', marginTop: 5, objectFit: 'contain' }} 
 src='//static.allreaday.com/xxx.jpg' 
 alt="預覽圖"
/>

https://static.xxx.com/xxx.jpg?imageMogr2/thumbnail/!50p

const onChange = (data: UploadChangeParam) => {
  const { fileList } = data;
  // ...
  isCache && setUploadImageCache(fileList);
  // ...
}
/**
 * 緩(huan)存上傳(chuan)文件
 */
export function setUploadImageCache(data:UploadFile[]) {
  localStorage.setItem('upload_image', JSON.stringify(data));
}

QuotaExceededError: Failed to execute 'setItem' on 'Storage': Setting the value of 'upload_image' exceeded the quota.

/**
 * 緩(huan)存(cun)上(shang)傳文件
 */
export function setUploadImageCache(data:UploadFile[]) {
  // 壓(ya)縮數據
  const compress = btoa(encodeURIComponent(JSON.stringify(data)));
  localStorage.setItem('upload_image', compress);
}
/**
 * 讀取上傳文件的緩存
 */
export function getUploadImageCache() {
  const files = localStorage.getItem('upload_image');
  if(!files) return [];
  // 解壓(ya)數據
  const uncompress = decodeURIComponent(atob(files));
  return JSON.parse(uncompress);
}

    /**
     * 存(cun)儲(chu)數(shu)據（支持(chi)大型(xing)數(shu)據）
     * @param key 鍵名(ming)
     * @param value 要存(cun)儲(chu)的值（可(ke)為任意類型(xing)）
     */
    async setItem(key: string, value: any): Promise<void> {
      if (!this.db) await this.init();
  
      return new Promise<void>((resolve, reject) => {
        const transaction = this.db!.transaction(['largeData'], 'readwrite');
        const store = transaction.objectStore('largeData');
        const item: StoredItem = { key, value, timestamp: Date.now() };
  
        const request: IDBRequest = store.put(item);
  
        request.onsuccess = () => resolve();
        request.onerror = () => {
          console.error('存儲數據失敗:', request.error);
          reject(request.error);
        };
      });
    }
  
    /**
     * 獲取存儲的數據
     * @param key 鍵名
     * @returns 存儲的值，若不存在則返回 null
     */
    async getItem(key: string): Promise<any> {
      if (!this.db) await this.init();
  
      return new Promise<any>((resolve, reject) => {
        const transaction = this.db!.transaction(['largeData'], 'readonly');
        const store = transaction.objectStore('largeData');
        const request: IDBRequest = store.get(key);
  
        request.onsuccess = () => {
          const result = request.result as StoredItem | undefined;
          resolve(result ? result.value : null);
        };
  
        request.onerror = () => {
          console.error('獲取數據失敗:', request.error);
          reject(request.error);
        };
      });
    }

const quota = await navigator.storage.estimate();
console.log(`已用空間: ${quota.usage} 字節`);
console.log(`總配額(e): ${quota.quota} 字節`);
const percentageUsed = (quota.usage / quota.quota) * 100;
console.log(`已(yi)使用可用存(cun)儲的 ${percentageUsed}%`);

<Upload {...props}>
  <Button icon={<UploadOutlined />}>Click to Upload</Button>
</Upload>

<div onClick={}>
  <ProFormUploadButton />
</div>

document.getElementById(name)?.addEventListener('click', () => {
  setUploadAreaLoading(true); 
});

window.addEventListener('focus', function() {
  const fileInput = document.getElementById(name) as HTMLInputElement;
  console.log(fileInput && fileInput.files)
});

document.getElementById(name)?.addEventListener('change', (e) => {
  const fileInput = e.target as HTMLInputElement;
  if(!fileInput) return;
  const files = fileInput.files;
  console.log('change', files);
  if(files && files.length > 0) {
    setUploadAreaLoading(true);
  }
  // fileInput.value = '';   //清空已選文(wen)件
});

<span class="ant-upload">
  <input id="reviews" type="file" accept="image/*" multiple="" style="display: none;">
</span>

document.getElementsByClassName('ant-upload-select')

const fileContainer = uploadRef.current?.nativeElement;
const onClick = (e:Event) => {
  const fileInput = e.target as HTMLInputElement;
  // 攔截非(fei)上傳控(kong)件的點擊(ji)事件
  if(!fileInput || fileInput.id !== name) {
    return;
  }
  /**
   * 在上傳區域開啟加載狀態
   * 因為當上傳幾百(bai)張圖時，整個界面就會卡住，不給用戶反饋
   */
  setUploadAreaLoading(true);
};
fileContainer?.addEventListener('click', onClick, false);

const onChange = (e:Event) => {
  const fileInput = e.target as HTMLInputElement;
  // 攔截非上傳控件的點(dian)擊事件
  if(!fileInput || fileInput.id !== name) {
    return;
  }
  const files = fileInput.files;
  if(files && files.length > 0) {
    setUploadAreaLoading(true);
  }
};
fileContainer?.addEventListener('change', onChange, false);