Home Strings Regular Expression To Check Non-digit Characters Regular Expression To Check Non-digit Characters A Regular Expression to determine a character is not a digit/number. /[^0-9]/g Click To Copy Matches: regex ^regex ~regex Non-matches: 12345 See Also: Regular Expressions For 4 Or 6 Digits Previous Post Regular Expression To Match All URLs In Text Next Post Regular Expression To Check If Number Is Float More Like This: Regex To Match Whitespaces Between Words Regex To Match Chinese/Japanese/Korean Characters Regex To Match Content Between HTML Tags