Regular Expressions (Regex) are sequences of characters that define search patterns. They are incredibly powerful for text manipulation.
Common Regex Applications
- •Form Validation: Ensuring an email address or phone number follows the correct format.
- •Data Extraction: Pulling all URLs or specific IDs from a massive log file.
- •Find and Replace: Performing complex bulk edits that simple string matching cannot handle.
Getting Started
Regex syntax can be intimidating, but it is worth learning. For example, ^d{5}$ matches exactly a five-digit US ZIP code.
You can practice your patterns using our Find & Replace tool, which supports full regex matching right in your browser.