Macra chun iontráil ríomhphoist dhúblach a sheachaint

Luaite as CS Dé Sathairn, 25 Márta 2023

Bhí Kutools tar éis scarbhileog a dhéanamh dúinn in Excel chun iontráil dhúbailte seoladh ríomhphoist a sheachaint. Ach tá an scarbhileog seo caillte againn. Mar sin is í mo cheist an féidir an macra céanna seo a dhéanamh chun oibriú ar Google Sheets?

function checkDuplicates() {

  var sheet = SpreadsheetApp.getActiveSheet();

  var data = sheet.getDataRange().getValues();

  var emailCol = 2; // Replace 2 with the column number of the email column

  

  var emails = {};

  var duplicates = [];

  

  // Loop through the data and check for duplicates

  for (var i = 1; i < data.length; i++) {

    var email = data[i][emailCol];

    

    if (email && email !== "" && emails[email]) {

      // Duplicate found

      duplicates.push(i + 1); // Add row number to duplicates array

    } else {

      // Add email to hash table

      emails[email] = true;

    }

  }

  

  if (duplicates.length > 0) {

    // Display error message

    var message = "Duplicate email(s) found on row(s): " + duplicates.join(", ");

    SpreadsheetApp.getUi().alert(message);

  }

}