$('#id')还是$("id")
Should we use single quotes or double quotes after our selector - PHP Chinese website Q&A - Should we use single quotes or double quotes after our selector - PHP Chinese website Q&A
Take a look around and learn.
单引号和双引号都可以，没有特别严格的限制
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Should we use single quotes or double quotes after our selector - PHP Chinese website Q&A - Should we use single quotes or double quotes after our selector - PHP Chinese website Q&A
Take a look around and learn.
单引号和双引号都可以，没有特别严格的限制