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es6での変数の値入れ替え

More than 3 years have passed since last update.

変数の値入れ替え。忘れないようにメモ。

es5
var a = 1;
var b = 2;

var tmp = a;
a = b;
b = tmp;
// => a: 2, b: 1
es6
let a = 1;
let b = 2;
[b, a] = [a, b];
// => a: 2, b: 1

配列の分割代入を利用する。

yamayamasan
qiitaでは自分の備忘録的に使っていこうと思ってます
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