A similar question on here doesn't deal with my scenario specifically and code from a tutorial doesn't work as advertised. I'm using Google Apps Script to write results from an HTML form to a Google Sheet using [this][1]. On submit it loads the Google App JSON result. The article mentions adding an event listener on submit to have a thank you alert. That didn't work and I'd rather redirect users to a thank you page. I tried a onClick="window.location.href='page to load';" but that didn't work either. So, I feel like it should be added to the Google App script copied below. I tried a few things but none worked. One of my attempts are still in there. It's about syntax and Google App forums and docs shed no light on exactly this. Hope someone can assist. Here's the code:

const scriptProp = PropertiesService.getScriptProperties()

function intialSetup () {
  const activeSpreadsheet = SpreadsheetApp.getActiveSpreadsheet()
  scriptProp.setProperty('key', activeSpreadsheet.getId())
}

function doPost (e) {
  const lock = LockService.getScriptLock()
  lock.tryLock(10000)

  try {
    const doc = SpreadsheetApp.openById(scriptProp.getProperty('key'))
    const sheet = doc.getSheetByName(sheetName)

    const headers = sheet.getRange(1, 1, 1, sheet.getLastColumn()).getValues()[0]
    const nextRow = sheet.getLastRow() + 1

    const newRow = headers.map(function(header) {
      return header === 'Date' ? new Date() : e.parameter[header]
    })

    sheet.getRange(nextRow, 1, 1, newRow.length).setValues([newRow])

    return ContentService
      .createTextOutput(JSON.stringify({ 'result': 'success', 'row': nextRow }))
      .setMimeType(ContentService.MimeType.JSON)
  }

  catch (e) {
    return ContentService
      .createTextOutput(JSON.stringify({ 'result': 'error', 'error': e }))
      .setMimeType(ContentService.MimeType.JSON)
  }

  finally {
    lock.releaseLock()
  }
}
//attempt at redirect 
  function s() {
    window.location.href = 'https://thewebsite.com'
  }```

 


  [1]: https://github.com/levinunnink/html-form-to-google-sheet