querySelector 方法参数被放入反引号，为什么?
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 ${}.
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