使用vue 写一个方法,每隔N秒钟(传参)扫描localstorage中所有以autoSaveContent(传参)开头的数据, 数据格式如下:{"saveTime":"2023-01-19 00:19:00","content":"123"}，如果当前时间和json数据的saveTime 时间间隔大于N秒钟(传参),则删除该数据，直接给出完整的代码案例，无需解释

methods: {
  scanLocalStorage(autoSaveContent, interval) {
    setInterval(() => {
      for (let i = 0; i < localStorage.length; i++) {
        let key = localStorage.key(i);
        if (key.startsWith(autoSaveContent)) {
          let value = JSON.parse(localStorage.getItem(key));
          let saveTime = new Date(value.saveTime);
          let currentTime = new Date();
          let timeDiff = currentTime - saveTime;
          if (timeDiff > interval * 1000) {
            localStorage.removeItem(key);
          }
        }
      }
    }, interval * 1000);
  }
}