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Javascript_関数を作る

Last updated at Posted at 2022-05-01

はじめに

このページは初学者のメモ書きです。

参考

Progate JavascriptⅢ

内容

関数を作る時の書き方①
const 定数名 = function(引数){
  関数の中身を書く;
}
関数を作る時の書き方②
const 定数名 = (引数) =>{
  関数の中身を書く;
}
関数で処理した値を返す
const 定数名 = () =>{
  return ;
}
戻り値をつかう例
const half = (number) => {
  return number / 2;
};

const result = half(130);

console.log(`130の半分は${result}です`);

half関数に入れた数字の半分を出力した。

引数は複数設定することもできる

引数複数
const half = (number1,number2) => {
  return number1 / number2;
};

const result = half(130,20);

console.log(`${result}です`);

簡単な関数を作れるようになった。

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