Javascript循环返回字符串x次

问题描述

我现在正在进行Udacity javascript研究，并且有一个令我困扰的测验。我知道如何在ruby中轻松完成，但是这个就是杀了我。

I'm doing Udacity javascript studies now and there is one quiz that bothers me. I know how to do it easily in ruby, but this one is killing me.

我需要调用函数并返回hanum次并添加！最后是循环。

I need to call function and return "ha" num times and add "!" at the end with the loop.

我试过这个但是没有帮助。应该很简单。

I tried this but it didn't help. Should be very simple.

function laugh(num) {
  for (var x = 0; num; x ++) {
      return 'ha';
  }
}

console.log(laugh(3));

推荐答案

实际上你甚至不需要循环。

Actually you don't even need the loop.

const laugh = num => 'ha'.repeat(num) + '!';

console.log(laugh(3));
console.log(laugh(5));

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