> For the complete documentation index, see [llms.txt](https://april.gitbook.io/learning-js/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://april.gitbook.io/learning-js/chapter-5./5.8-and-or-not/5.8.4.md).

# 5.8.4 쉼표 연산자

표현식을 결합하여 두 표현식을 평가한 후, 두 번째 표현식의 결과를 반환

```javascript
let x = 0, y = 10, z;
 
z = (x++, y++);
```