Run a JavaScript regular expression on sample text.
Inputs and results
Input: Pattern, flags and test string.
Output: Highlighted matches, match information or syntax error.
How it works
1
Pattern, flags and test string.
2
Enter a pattern and flags, then inspect a short test string.
Examples
science Example to try
Pattern [0-9]+ with g finds 12 and 34 in Order 12, batch 34.
Limitations
JavaScript syntax differs from other engines. Pathological expressions run on the main thread and can freeze a tab; avoid huge input.
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