Regex Tester
//g
0 chars
Results
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JavaScript Regex Flags
Global (g) | Find all matches in the string, not just the first one. Essential for replacing or counting all occurrences.
Case Insensitive (i) | Match regardless of letter case. Makes [a-z] also match uppercase letters.
Multiline (m) | Changes behavior of ^ and $ to match start/end of each line instead of the whole string.
Common Use Cases
Input Validation | Validate email addresses, phone numbers, URLs, and other structured data formats.
Text Extraction | Extract specific patterns from text like dates, prices, or identifiers.
Search & Replace | Find and transform text patterns in documents or code.