javascript - 沉迷于 Codecademy JS 类(class) ('The Story So Far: If, Else, and Loops' 2/14)

Question

尝试此代码

var isEven = function(number) {


    if (number % 2 === 0) {
        return true;
    } else if (isNaN(number)) {
        return "Not a number";
    } else {
        return false;
    }
}


isEven();

这一定适合你。我认为这个是正确的!!!!

Answer 1

由于没有 isNan 函数，您会收到 ReferenceError。它叫isNaN .