Networkingflags: g

HTTP Status Code

Match 3-digit HTTP status codes in the 1xx–5xx range.

Available in

JavaScript / ECMAScript code

jsJavaScript

const re = new RegExp("\\b[1-5]\\d{2}\\b", "g");
const input = "HTTP 200 OK";
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"\b[1-5]\d{2}\b")
input_text = "HTTP 200 OK"
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(`\b[1-5]\d{2}\b`)
	input := `HTTP 200 OK`
	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

\b[1-5]\d{2}\b   (flags: g)

Raw source: \b[1-5]\d{2}\b

How it works

Leading digit 1–5 covers all standard class codes (informational, success, redirect, client error, server error), followed by any two digits. Word boundaries prevent partial matches.