How to filter an array with objects?

• 0
  There is an array like
  ['1', `2`,` 3`, `4`,` 5`]
  And there is also an array with objects of this kind.
  

  [
   {
      number: '3',
      name: 'Vasja',
   },
   {
      number: '5',
      name: 'Igor',
   }
  ]

  
  
  We need to end up with an array like this
  ['1', `2`,` 4`]
  
  That is, an array with all the numbers with which there are no objects. Thank you

  JavaScript Anonymous, Jun 22, 2019

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2 Answers
• 0

  numbers.filter(n => !objects.some(m => m.number === n))

  Anonymous

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• 0
  1. Reduce a multidimensional array to a one-dimensional one
  
  2. Filter out the first, checking for values ​​in the second.
  
  
  
  

  let arr2_plain = arr2.map(item => item.number);
  
  let result = arr1.filter(item => !arr2_plain.includes(item));

  Evan May

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