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Apr 22nd, 2019
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  1. var array1 = [ "要素2", "要素3", "要素4", "要素5" ];
  2. var array2 = [ 2, 3, 4, 5 ];
  3. var array3 = [ "b", "c", "d", "e"];
  4.  
  5. array1.splice(1, 1); //指定した位置の要素を削除します
  6. array2.splice(1, 2); //指定した位置の要素を削除します
  7. array3.splice(1, 3); //指定した位置の要素を削除します
  8.  
  9. console.log(array1);
  10. console.log(array2);
  11. console.log(array3);
  12.  
  13. //console.log()の結果
  14. //array1 → ["要素2", "要素4", "要素5"]
  15. //array2 → [2, 5]
  16. //array3 → ["b"]
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