Appscript to clear data, Leaving Header (first row) intact

Question

I have a spreadsheet that I would like to create an app script function to clear data/set values from certain cells. It also needs to work up to the last row, as I will be adding many rows. I have something started but it also wipes the header row. I would like, as I say, to be able to reset a bunch of cells however many rows there are, but preserving the header.

代码：

function clear() {

var header = SpreadsheetApp.getActive()
        .getRangeList(['1:1']);

var rangeList1 = SpreadsheetApp.getActive()
        .getRangeList(['I:I', 'J:J','L:L', 'N:N', 'O:O', 'P:P']);
        rangeList1.setValue("-");

var rangeList2 = SpreadsheetApp.getActive()
        .getRangeList(['C:C', 'D:D', 'G:G', 'H:H', 'M:M', 'R:R', 'S:S', 'T:T']);
        rangeList2.setValue(" ");
}

I have a function written that defines ranges based on the columns, some to be reset to '-' some to be reset to ' ' (blank)

The problem is when I run the script the correct values are placed in the correct columns, but the header is also changed. I would like to preserve or protect the header. （菜单栏中的菜单项也被激活的脚本btw）

我尝试使用.offset，但我无法正确获得语法。

我做到了

Answer 1

从表

获取所有数据

检查该纸中存在多少个单元

从标题下方的单元格到最后一个单元格
1. 获取所有单元格
最后，清除所有这些细胞。

function clear(sheet, headerSize = 0) {
  const nRows = sheet.getMaxRows();                   // number of rows on the sheet
  const nColumns = sheet.getMaxColumns();             // number of columns on the sheet
  const lastCell = sheet.getRange(nRows, nColumns);   // the last cell of this sheet

  // get the cells from the row just below the header
  //  from the first to the last column
  const data = sheet.getRange('A' + (headerSize + 1) + ':' + lastCell.getA1Notation());  

  data.clear();
}


// clear all cells leaving the header (first row) as it is
const sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName(SHEETNAME));
const headerSize = 1;
clear(sheet, headerSize);

Answer 2