Comprehensive Collection of Regular Expressions for Common Validation Scenarios

This article gathers a large set of regular expressions (regex) that can be used to validate various common data formats, such as email addresses, phone numbers, identification numbers, dates, numeric values, URLs, colors, file paths, and more. It also offers a quick tip to visualize regexes using the online tool jex.im/regulex .

Phone and Number Related

Examples include patterns for Chinese mobile numbers, landline numbers, email addresses, postal codes, ID numbers, bank card numbers, license plates, QQ numbers, WeChat IDs, version numbers, strong passwords, IP addresses (IPv4/IPv6), and URLs with optional ports.

<code>/^(?:(?:\+|00)86)?1\d{10}$/</code>

<code>/^\d{3}-\d{8}|\d{4}-\d{7}$/</code>

<code>/^\w+([-+.]*\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/</code>

<code>/^[1-9]\d{5}(?:18|19|20)\d{2}(?:0[1-9]|1[0-2])(?:0[1-9]|[1-2]\d|30|31)\d{3}[\dXx]$/</code>

<code>/^[1-9]\d{9,29}$/</code>

<code>/^[\u4e00-\u9fa5]{0,}$/</code>

<code>/^[0-9]{1,3}(?:\.[0-9]{1,3}){3}$/</code>

<code>/^((ht|f)tps?:\/\/)?[\w-]+(\.[\w-]+)+(:\d{1,5})?\/?$/</code>

Numeric Patterns

Patterns for pure digits, integers, positive/negative integers, floating‑point numbers, decimals, and specific length constraints.

<code>/^[0-9]*$/</code>

<code>/^-?\d+$/</code>

<code>/^\d+(?:\.\d+)?$/</code>

<code>/^\d{5}$/</code>

Character Patterns

Patterns for alphabetic strings, uppercase, lowercase, Chinese characters, full‑width/half‑width symbols, and mixed alphanumeric/underscore strings.

<code>/^[A-Za-z]+$/</code>

<code>/^[A-Z]+$/</code>

<code>/^[a-z]+$/</code>

<code>/^[\u4e00-\u9fa5]+$/</code>

<code>/^[\uFF00-\uFFFF]$/</code>

<code>/^[\u0000-\u00FF]$/</code>

Time and Date Patterns

Regular expressions for 24‑hour and 12‑hour time formats, various date formats (yyyy‑MM‑dd, yyyyMMdd, etc.), leap‑year checks, and combined date‑time strings.

<code>/^(?:[01]\d|2[0-3]):[0-5]\d:[0-5]\d$/</code>

<code>/^\d{4}-\d{1,2}-\d{1,2}$/</code>

<code>/^\d{8}$/</code>

<code>/^(19|20)\d{2}$/</code>

Programming‑Related Patterns

Regexes for hexadecimal colors, image/video URLs, MAC addresses, subnet masks, file paths (Linux/Windows), HTML comments/tags, CSS property extraction, and whitespace trimming.

<code>/^#?([a-fA-F0-9]{6}|[a-fA-F0-9]{3})$/</code>

<code>/^https?:\/\/.*\.(gif|png|jpg|jpeg|webp|svg|psd|bmp|tif)$/i</code>

<code>/^((([a-f0-9]{2}:){5})|(([a-f0-9]{2}-){5}))[a-f0-9]{2}$/i</code>

<code>/^\/\(\w+\/\)+\w+\.\w+$/</code>

<code>/^[a-zA-Z]:\\(?:\w+\\)*\w+\.\w+$/</code>

Life‑Related Patterns

Regexes for monetary values (with optional commas and decimals), passports, Hong Kong/Macau IDs, stock codes, and words that exclude a specific substring.

<code>/^-?\d+(,\d{3})*(\.\d{1,2})?$/</code>

<code>/(^[1-9]{1}[0-9]*$)|(^[0-9]*\.[0-9]{2}$)/</code>

<code>/(^[EeKkGgDdSsPpHh]\d{8}$)|(^(([Ee][a-fA-F])|([DdSsPp][Ee])|([Kk][Jj])|([Mm][Aa])|(1[45]))\d{7}$)/</code>

Conclusion

The collection provides a handy reference for developers who need quick, ready‑to‑use regular expressions for a variety of validation tasks, and encourages readers to use the visualizer tool to better understand and customize these patterns.