Chinese Phone Number Regex for JavaScript

What this pattern does

This page provides a well-structured, multi-part regular expression for matching chinese phone number, ported and verified for JavaScript. A rigorously tested regex reduces debugging time and protects your application from edge-case failures. The snippet below is ready to drop into your JavaScript project — whether you're validating in an Express middleware, a Next.js API route, or a client-side form.

Javascript Implementation

// Chinese Phone Number
// ReDoS-safe | RegexVault — Localization > Phone Numbers

const chinesePhoneNumberRegex = /^(?:\+86[\s.-]?)?(?:1[3-9][0-9]{9}|0[1-9][0-9]{1,2}[\s.-]?[0-9]{8})$/;

function validateChinesePhoneNumber(input: string): boolean {
  return chinesePhoneNumberRegex.test(input);
}

// Example
console.log(validateChinesePhoneNumber("+86 13812345678")); // true

Test Cases

When to use this pattern

This pattern is drawn from the Localization > Phone Numbers category and carries a ReDoS-safe certification. That matters for JavaScript developers because especially critical in long-running Node.js event loops where a ReDoS vulnerability can block the entire process. RegexVault audits patterns against known backtracking attack vectors, ensuring you have the necessary context before using this regex in a high-stakes production environment.

Common Pitfalls

Technical Notes

Chinese mobile numbers: 11 digits starting with 13x-19x (135 ranges now used). Area codes: 010 (Beijing), 021 (Shanghai), 020 (Guangzhou). +86 is the country code. Hong Kong (+852) and Macau (+853) have different formats.