Gives an error when entering an empty value into value?

• 0

  document.getElementById('FN').value = values[1][1] || '';

  
  if the values ​​array is empty, then an error is generated:
  Uncaught TypeError: Cannot read property '1' of undefined
  what did you do wrong?

  JavaScript Anonymous, Aug 20, 2020

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1 Answers
• 0
  Well, obviously.
  
  values ​​= []
  
  hence values ​​[1] = undefined
  
  You are trying to get the element at index values ​​[1] [1] (undefined [1])
  
  But undefined doesn't have that. Here comes the mistake.
  
  Cannot read property '1' of undefined

  Scarlett Butler

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