leben-jp · March 12, 2018 12:16
diff --git a/javascript_array2.js b/javascript_array2.js

 var array = ['a', 'b', 'c'];
 
 array.splice(1, 0, '1'); // 二番目に挿入
 console.log(array); //  ['a', '1', 'b', 'c']

	var array = ['a', 'b', 'c'];

	array.splice(1, 0, '1'); // 二番目に挿入
	console.log(array); // ['a', '1', 'b', 'c']
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