如果单元格与使用 Apps 脚本的不同工作表列表中的单元格匹配，则条件格式

Question

I have a changing list of numbers on a tab that I would like to apply conditional formatting to, if the cell is present in another list of numbers, on a different sheet.

Potential Cities/Zip-Codes

List of Blocked Zip Codes

I would like the zip codes on the main "Potential Cities" sheet, to be formatted when they are listed on the "Blocked Zip Codes" sheet.

The purpose is to create a formatting change that will very plainly show the user if a zip code they are trying to enter is blocked (or on the list). Normal conditional formatting does not work because copy/paste will overwrite CF rules. I also need to be able to apply the solution to multiple different sheets, that are all checking their cells against the list of blocked cells.

Answer 1

You can create an installable onEdit() trigger for your Potential Cities Spreadsheet which checks the Blocked Zips sheet for a match and applies some kind of formatting accordingly.

For example:

function checkForBlockedZips(e) {
  // do nothing if not column D
  if (e.range.getColumn() !== 4) return

  // get list of zips from blocked zips sheet
  const blockedZipsSsId = "1T9BbifVJjVMqH5iaOvxZjgmZ24ByKsft9nfUGhbDQls"
  const blockedZipsSs = SpreadsheetApp.openById(blockedZipsSsId)

  const blockedZipsSheet = blockedZipsSs.getSheetByName("Sheet1")
  const zipCodes = blockedZipsSheet.getRange("A2:A").getValues()
    .flat(2)
    .filter(x => x)

  // check if the entered value is in the list of blocked zips
  if (~zipCodes.indexOf(e.range.getValue())) {
    // create cell style
    const strikethrough = SpreadsheetApp.newTextStyle()
      .setStrikethrough(true)
      .build()
  
    const richText = SpreadsheetApp.newRichTextValue()
      .setText(e.range.getValue())
      .setTextStyle(strikethrough)
      .build()
    
    // set the cell to have the desired rich text style
    e.range.setRichTextValue(richText).setBackground("yellow")
  }
  else {
    // if the value is not a blocked zip then reset the cell style 
    const nostrikethrough = SpreadsheetApp.newTextStyle()
      .setStrikethrough(false)
      .build()

    const richText = SpreadsheetApp.newRichTextValue()
      .setText(e.range.getValue())
      .setTextStyle(nostrikethrough)
      .build()

    e.range.setRichTextValue(richText).setBackground("white")
  }
}

Things to note:

• You need to use e.range.getValue() instead of e.value so that copy/pasted values can be read
• You need to add this script to the Potential cities sheet and authorise it as an installable trigger