wiki/content/20201110095139-javascript_regexp_u_flag.md

---
date: 20201110
id: 76fc0a0a-7d56-49c7-8c57-7686cca110fc
title: JavaScript RegExp /u flag
---

This flag matches astral characters such as emojis:

``` javascript
console.log(/^.$/u.test("🙂")); // true
```
Quartz sync: May 6, 2024, 10:40 PM 2024-05-06 20:40:05 +00:00			`---`
Quartz sync: Oct 30, 2024, 6:04 PM 2024-10-30 17:04:36 +00:00			`date: 20201110`
Quartz sync: May 6, 2024, 10:40 PM 2024-05-06 20:40:05 +00:00			`id: 76fc0a0a-7d56-49c7-8c57-7686cca110fc`
			`title: JavaScript RegExp /u flag`
			`---`

			`This flag matches astral characters such as emojis:`

			``` javascript
			`console.log(/^.$/u.test("🙂")); // true`
			```