Numbersflags: g

USD Currency (Inline)

Match US dollar amounts inline in text: `$1,234.56`, `$99`, `$1,000,000.00`.

Available in

JavaScript / ECMAScript code

jsJavaScript

const re = new RegExp("\\$\\d{1,3}(?:,\\d{3})*(?:\\.\\d{2})?", "g");
const input = "Total $1,234.56 plus tax of $99";
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"\$\d{1,3}(?:,\d{3})*(?:\.\d{2})?")
input_text = "Total $1,234.56 plus tax of $99"
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(`\$\d{1,3}(?:,\d{3})*(?:\.\d{2})?`)
	input := `Total $1,234.56 plus tax of $99`
	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

\$\d{1,3}(?:,\d{3})*(?:\.\d{2})?   (flags: g)

Raw source: \$\d{1,3}(?:,\d{3})*(?:\.\d{2})?

How it works

\$ matches the literal dollar sign. \d{1,3} matches the first 1–3 digits. (?:,\d{3})* matches additional thousands groups (comma + 3 digits). (?:\.\d{2})? optionally matches a decimal portion with exactly two digits (cents).