HOME > 日記 > 学習忘備録(Javascript:戻り値を返す関数) 2021/05/18 let tax = (price) => { return price * 1.1; }; console.log(tax(40000)); let tax = (price) => { return bill * 1.1; console.log(price); }; tax(20000); Twitter Facebook Google+ Pocket B!はてブ LINE