Validationflags: g

Twitter / X Handle

Match Twitter/X @handles — 1 to 15 characters of letters, digits, or underscores preceded by @.

Available in

JavaScript / ECMAScript code

jsJavaScript

const re = new RegExp("@([A-Za-z0-9_]{1,15})\\b", "g");
const input = "Follow @jack and @TwitterDev for updates";
const matches = [...input.matchAll(re)];
console.log(matches.map(m => m[0]));

Uses `String.prototype.matchAll` for global iteration (Node 12+ / all modern browsers).

Python (re) code

pyPython

import re

pattern = re.compile(r"@([A-Za-z0-9_]{1,15})\b")
input_text = "Follow @jack and @TwitterDev for updates"
for m in pattern.finditer(input_text):
    print(m.group(0))

Stdlib `re` module — no third-party dependency. Works on Python 3.6+.

Go (RE2) code

goGo

package main

import (
	"fmt"
	"regexp"
)

func main() {
	re := regexp.MustCompile(`@([A-Za-z0-9_]{1,15})\b`)
	input := `Follow @jack and @TwitterDev for updates`
	for _, match := range re.FindAllString(input, -1) {
		fmt.Println(match)
	}
}

Uses `regexp.MustCompile` (panics on bad patterns at startup) and `FindAllString` for all matches.

Pattern

regexengine-agnostic

@([A-Za-z0-9_]{1,15})\b   (flags: g)

Raw source: @([A-Za-z0-9_]{1,15})\b

How it works

@ matches the literal at-sign. The capturing group ([A-Za-z0-9_]{1,15}) captures 1–15 characters of the Twitter username alphabet. \b prevents partial matches inside longer words.