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配列の扱い方

Posted at

#目次
①配列とは
②配列の扱い方

####①配列とは
データの集合体のこと。一つの変数に対して複数の値を格納できる。

####②配列の扱い方

//下記のように定義ができる。
 const arry = [1,2,3,4,5,6];

//要素の数を知りたい時
 arry.length で配列の要素の数を知ることができる

//配列の末尾にitemが追加される
arry.push("item");

//配列の先頭に代入できる
arry.unshift("hello");

//配列の末尾を削除できる
arry.pop()

//配列の先頭を削除することができる
arry.shift()
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