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清除試算表中的資料

程式設計程度：中級
時間長度：20 分鐘
專案類型：編輯器外掛程式

目標

瞭解解決方案的功能。
瞭解 Apps Script 服務在解決方案中的作用。
設定指令碼。
執行指令碼。

認識這項解決方案

自動移除空白資料列和欄、將試算表裁剪至資料範圍邊緣，以及填補資料中的空白，以清理試算表資料。

外掛程式設定試算表格式的示範

運作方式

指令碼會執行下列功能：

刪除空白資料列：在所選範圍內，指令碼會找出空白資料列並刪除。如果一列中的儲存格含有空格字元，該列不會視為空白。
刪除空白資料欄：在所選範圍內，指令碼會找出空白資料欄並刪除。如果資料欄中的儲存格含有空格字元，系統不會將該欄視為空白。
將工作表裁剪至資料範圍：指令碼會找出資料範圍的結束位置，並刪除多餘的資料列和資料欄。
填入空白資料列：指令碼會複製並貼上所選活動儲存格的內容，並貼到該儲存格下方空白資料列的儲存格中。當指令碼遇到非空白資料列或到達資料範圍的結尾時，就會停止貼上內容。

Apps Script 服務

本解決方案會使用下列服務：

試算表服務：取得有效試算表，並執行所有清理函式。

必要條件

如要使用這個範例，您必須具備下列先決條件：

Google 帳戶 (Google Workspace 帳戶可能需要管理員核准)。
可連上網際網路的網路瀏覽器。

設定指令碼

點選下方按鈕，即可開啟全新專案的 Apps Script 專案。
開啟專案
按一下「總覽」圖示。
在總覽頁面中，按一下「建立副本」圖示。
在複製的專案頂端，依序按一下「部署」>「測試部署」。
按一下「選取類型」旁的「啟用部署類型」 >「編輯器外掛程式」。
按一下「建立新測試」。
在「測試文件」下方，點選「未選取任何文件」。
選擇要清理資料的試算表，然後按一下「插入」。如要使用範例文件，請複製「範例清理資料」試算表。
按一下「儲存測試」。
如要開啟試算表，請選取已儲存的測試旁的圓形按鈕，然後按一下「執行」。

執行指令碼

在試算表中選取範圍 A1:F20。
依序點選「擴充功能」>「清單副本」>「刪除空白資料列」。
出現提示時，請按一下「繼續」並授權指令碼。
依序點選「擴充功能」>「清單副本」>「刪除空白資料列」。
依序點選「擴充功能」「清單副本」「刪除空白欄」。
依序點選「擴充功能」>「清單副本」>「將工作表裁剪至資料範圍」。
選取儲存格 C7。
依序點選「擴充功能」「清單副本」「填入下方空白資料列」。

查看程式碼

如要查看這個解決方案的 Apps Script 程式碼，請按一下下方的「查看原始碼」：

查看原始碼

Code.gs

solutions/editor-add-on/clean-sheet/Code.js

前往 GitHub 查看

// To learn how to use this script, refer to the documentation:
// https://developers.google.com/apps-script/add-ons/clean-sheet

/*
Copyright 2022 Google LLC

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

// Application Constants
const APP_TITLE = 'Clean sheet';

/**
 * Identifies and deletes empty rows in selected range of active sheet.
 * 
 * Cells that contain space characters are treated as non-empty.
 * The entire row, including the cells outside of the selected range,
 * must be empty to be deleted.
 *  
 * Called from menu option.
 */
function deleteEmptyRows() {

  const sheet = SpreadsheetApp.getActiveSheet();

  // Gets active selection and dimensions.
  let activeRange = sheet.getActiveRange();
  const rowCount = activeRange.getHeight();
  const firstActiveRow = activeRange.getRow();
  const columnCount = sheet.getMaxColumns();

  // Tests that the selection is a valid range.
  if (rowCount < 1) {
    showMessage('Select a valid range.');
    return;
  }
  // Tests active range isn't too large to process. Enforces limit set to 10k.
  if (rowCount > 10000) {
    showMessage("Selected range too large. Select up to 10,000 rows at one time.");
    return;
  }

  // Utilizes an array of values for efficient processing to determine blank rows.
  const activeRangeValues = sheet.getRange(firstActiveRow, 1, rowCount, columnCount).getValues();

  // Checks if array is all empty values.
  const valueFilter = value => value !== '';
  const isRowEmpty = (row) => {
    return row.filter(valueFilter).length === 0;
  }

  // Maps the range values as an object with value (to test) and corresponding row index (with offset from selection).
  const rowsToDelete = activeRangeValues.map((row, index) => ({ row, offset: index + activeRange.getRowIndex() }))
    .filter(item => isRowEmpty(item.row)) // Test to filter out non-empty rows.
    .map(item => item.offset); //Remap to include just the row indexes that will be removed.

  // Combines a sorted, ascending list of indexes into a set of ranges capturing consecutive values as start/end ranges.
  // Combines sequential empty rows for faster processing.
  const rangesToDelete = rowsToDelete.reduce((ranges, index) => {
    const currentRange = ranges[ranges.length - 1];
    if (currentRange && index === currentRange[1] + 1) {
      currentRange[1] = index;
      return ranges;
    }
    ranges.push([index, index]);
    return ranges;
  }, []);

  // Sends a list of row indexes to be deleted to the console.
  console.log(rangesToDelete);

  // Deletes the rows using REVERSE order to ensure proper indexing is used.
  rangesToDelete.reverse().forEach(([start, end]) => sheet.deleteRows(start, end - start + 1));
  SpreadsheetApp.flush();
}

/**
 * Removes blank columns in a selected range.
 * 
 * Cells containing Space characters are treated as non-empty.
 * The entire column, including cells outside of the selected range,
 * must be empty to be deleted.
 *   
 * Called from menu option.
 */
function deleteEmptyColumns() {

  const sheet = SpreadsheetApp.getActiveSheet();

  // Gets active selection and dimensions.
  let activeRange = sheet.getActiveRange();
  const rowCountMax = sheet.getMaxRows();
  const columnWidth = activeRange.getWidth();
  const firstActiveColumn = activeRange.getColumn();

  // Tests that the selection is a valid range.
  if (columnWidth < 1) {
    showMessage('Select a valid range.');
    return;
  }
  // Tests active range is not too large to process. Enforces limit set to 1k.
  if (columnWidth > 1000) {
    showMessage("Selected range too large. Select up to 10,000 rows at one time.");
    return;
  }

  // Utilizes an array of values for efficient processing to determine blank columns.
  const activeRangeValues = sheet.getRange(1, firstActiveColumn, rowCountMax, columnWidth).getValues();

  // Transposes the array of range values so it can be processed in order of columns.
  const activeRangeValuesTransposed = activeRangeValues[0].map((_, colIndex) => activeRangeValues.map(row => row[colIndex]));

  // Checks if array is all empty values.
  const valueFilter = value => value !== '';
  const isColumnEmpty = (column) => {
    return column.filter(valueFilter).length === 0;
  }

  // Maps the range values as an object with value (to test) and corresponding column index (with offset from selection).
  const columnsToDelete = activeRangeValuesTransposed.map((column, index) => ({ column, offset: index + firstActiveColumn}))
    .filter(item => isColumnEmpty(item.column)) // Test to filter out non-empty rows.
    .map(item => item.offset); //Remap to include just the column indexes that will be removed.

  // Combines a sorted, ascending list of indexes into a set of ranges capturing consecutive values as start/end ranges.
  // Combines sequential empty columns for faster processing.
  const rangesToDelete = columnsToDelete.reduce((ranges, index) => {
    const currentRange = ranges[ranges.length - 1];
    if (currentRange && index === currentRange[1] + 1) {
      currentRange[1] = index;
      return ranges;
    }
    ranges.push([index, index]);
    return ranges;
  }, []);

  // Sends a list of column indexes to be deleted to the console.
  console.log(rangesToDelete);

  // Deletes the columns using REVERSE order to ensure proper indexing is used.
  rangesToDelete.reverse().forEach(([start, end]) => sheet.deleteColumns(start, end - start + 1));
  SpreadsheetApp.flush();
}

/**
 * Trims all of the unused rows and columns outside of selected data range.
 * 
 * Called from menu option.
 */
function cropSheet() {
  const dataRange = SpreadsheetApp.getActiveSheet().getDataRange();
  const sheet = dataRange.getSheet();

  let numRows = dataRange.getNumRows();
  let numColumns = dataRange.getNumColumns();

  const maxRows = sheet.getMaxRows();
  const maxColumns = sheet.getMaxColumns();

  const numFrozenRows = sheet.getFrozenRows();
  const numFrozenColumns = sheet.getFrozenColumns();

  // If last data row is less than maximium row, then deletes rows after the last data row.
  if (numRows < maxRows) {
    numRows = Math.max(numRows, numFrozenRows + 1); // Don't crop empty frozen rows.
    sheet.deleteRows(numRows + 1, maxRows - numRows);
  }

  // If last data column is less than maximium column, then deletes columns after the last data column.
  if (numColumns < maxColumns) {
    numColumns = Math.max(numColumns, numFrozenColumns + 1); // Don't crop empty frozen columns.
    sheet.deleteColumns(numColumns + 1, maxColumns - numColumns);
  }
}

/**
 * Copies value of active cell to the blank cells beneath it. 
 * Stops at last row of the sheet's data range if only blank cells are encountered.
 * 
 * Called from menu option.
 */
function fillDownData() {

  const sheet = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet();

  // Gets sheet's active cell and confirms it's not empty.
  const activeCell = sheet.getActiveCell();
  const activeCellValue = activeCell.getValue();

  if (!activeCellValue) {
    showMessage("The active cell is empty. Nothing to fill.");
    return;
  }

  // Gets coordinates of active cell.
  const column = activeCell.getColumn();
  const row = activeCell.getRow();

  // Gets entire data range of the sheet.
  const dataRange = sheet.getDataRange();
  const dataRangeRows = dataRange.getNumRows();

  // Gets trimmed range starting from active cell to the end of sheet data range.
  const searchRange = dataRange.offset(row - 1, column - 1, dataRangeRows - row + 1, 1)
  const searchValues = searchRange.getDisplayValues();

  // Find the number of empty rows below the active cell.
  let i = 1; // Start at 1 to skip the ActiveCell.
  while (searchValues[i] && searchValues[i][0] == "") { i++; }

  // If blanks exist, fill the range with values.
  if (i > 1) {
    const fillRange = searchRange.offset(0, 0, i, 1).setValue(activeCellValue)
    //sheet.setActiveRange(fillRange) // Uncomment to test affected range.
  }
  else {
    showMessage("There are no empty cells below the Active Cell to fill.");
  }
}

/**
 * A helper function to display messages to user.
 * 
 * @param {string} message - Message to be displayed.
 * @param {string} caller - {Optional} text to append to title.
 */
function showMessage(message, caller) {

  // Sets the title using the APP_TITLE variable; adds optional caller string.
  const title = APP_TITLE
  if (caller != null) {
    title += ` : ${caller}`
  };

  const ui = SpreadsheetApp.getUi();
  ui.alert(title, message, ui.ButtonSet.OK);
}

solutions/editor-add-on/clean-sheet/Menu.js