我需要通过office.js删除word消息

<script src="https://appsforoffice.microsoft.com/lib/1/hosted/office.js" type="text/javascript"></script>

Office.initialize = function (reason) {
  // 初始化完成后的回调函数
};

Office.context.document.getFileAsync(Office.FileType.Compressed, { sliceSize: 65536 }, function (result) {
  if (result.status === Office.AsyncResultStatus.Succeeded) {
    var file = result.value;
    // 获取到Word文档对象后的处理逻辑
  }
});

file.getSliceAsync(0, file.size, function (result) {
  if (result.status === Office.AsyncResultStatus.Succeeded) {
    var data = result.value.data;
    // 对获取到的Word文档数据进行处理，删除消息等操作
    // ...
    // 删除消息的逻辑
    var newData = data.replace("要删除的消息", "");
    // ...
    // 将处理后的数据保存回Word文档
    file.closeAsync(function (result) {
      if (result.status === Office.AsyncResultStatus.Succeeded) {
        Office.context.document.setSelectedDataAsync(newData, { coercionType: Office.CoercionType.Text }, function (result) {
          if (result.status === Office.AsyncResultStatus.Succeeded) {
            // 删除消息成功
          }
        });
      }
    });
  }
});