var sum = (...rest) => {
let sum = 0;
rest.forEach((element, index) => {
if (typeof(element) !== 'number') {
throw `Parameter ${index + 1} must be a number: ${element}`;
}
sum += element;
});
return sum;
牛人
let 有在前面学习吗...
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及格先森
var sum = (...rest) => {
let sum = 0;
rest.forEach((element, index) => {
if (typeof(element) !== 'number') {
throw `Parameter ${index + 1} must be a number: ${element}`;
}
sum += element;
});
return sum;
}