我已经开始使用 Javascript 30.给定示例代码的麻烦是:

I've started Javascript 30. What bothers is like on given example code:

const audio = document.querySelector(`audio[data-key="${e.keyCode}"]`);

为什么将参数放在反引号中?我了解如何使用双引号和单引号以及何时可以同时使用.但是我不明白如何以及何时使用反引号.

Why are the arguments put into the backticks? I understand how to use double and single quotes and when I can use both. However I don't understand how and when to use backticks.

推荐答案

反引号允许你使用字符串 插值语法${}.

The backticks allow you to use the string interpolation syntax ${}.