Created
February 15, 2020 16:40
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鼠年全馬鐵人挑戰 - 2-3
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| const mathDouble = (a) => { // 箭頭函式表達式寫法 | |
| return a * 2; | |
| } | |
| console.log(mathDouble (10)) // 呼叫函式 |
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