アロー関数

PHOTO

Sun Mar 05 2023 06:45:46 GMT+0000 (Coordinated Universal Time)

// これまでの関数
var fnc = function(a, b) {
    return a + b;
};
document.write(fnc(2, 3) + "<br>");
 
// アロー関数1
var arrow1 = (a, b) => {
    return a + b;
};
document.write(arrow1(3, 4) + "<br>");
 
// アロー関数2（処理がreturnだけなら、省略可能）
var arrow2 = (a, b) => a + b;
document.write(arrow2(4, 5) + "<br>");

COPY

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