控制台登录javascript函数

Question

const getAverage = (numberOne, numberTwo) => {
    const average = (numberOne + numberTwo) / 2 ;
    console.log(average);
};

getAverage(365, 27);
// Output: 196

const getAverage = (numberOne, numberTwo) => {
    const average = (numberOne + numberTwo) / 2 ;
    return average;
};

getAverage(365, 27);
// Output:  SyntaxError: Identifier 'getAverage' has already been declared
at <anonymous>:1:1

为什么？

Answer 1

如果这些功能位于同一位置，那么您的问题是您使用相同的功能名称。

＆＃13;

＆＃13;

const getAverage = (numberOne, numberTwo) => {
	const average = (numberOne + numberTwo) / 2 ;
	console.log(average);
};

getAverage(365, 27);


const getAverage2 = (numberOne, numberTwo) => {
    const average = (numberOne + numberTwo) / 2 ;
    return average;
};

console.log(getAverage2(365, 27));

＆＃13;

＆＃13;

＆＃13;