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Aug 17th, 2017
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  1. var number = [1,2,3,4,5,6,7,8,9];
  2.  
  3. // Giả sử ta muốn tìm số chẵn
  4.  
  5. // cách viết cũ
  6. var odd = number.filter(function (x) {return x%2 === 0 })
  7. console.log(odd);
  8.  
  9. // Với Arrow
  10. var odd = number.filter( x => x%2 === 0 );
  11. console.log(odd);
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