javascript - Regular Expression to limit characters to 5000 - Stack Overflow

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I need a regular expression to simply limit the number of characters in a textarea to 5000. If there are more secure regular expressions I could use, I am open to suggestions.

Thanks

I need a regular expression to simply limit the number of characters in a textarea to 5000. If there are more secure regular expressions I could use, I am open to suggestions.

Thanks

• javascript
• regex

Share Improve this question Follow edited Apr 1, 2011 at 16:44 Stephan 43.1k6666 gold badges244244 silver badges340340 bronze badges asked Mar 31, 2011 at 15:53 user671460user671460 2111 silver badge22 bronze badges 3

• 1 What framework are you using? there may be a built in mechanism for this. – corsiKa Commented Mar 31, 2011 at 15:56
• 2 Just seems like a totally odd thing to do. Why use a Regex for this at all? Surely a simple limit on the string length of the textarea text would be easier to manage and avoid starting the regular expression engine every time someone adds something to the text? – glenatron Commented Mar 31, 2011 at 15:56
• I am using cForms for WordPress. It has built-in support for RegEx, but I'm not sure how to go about adding a string limit length to it. – user671460 Commented Mar 31, 2011 at 16:46

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2 Answers 2

Sorted by: Reset to default 8

^.{0,5000}$ should work. Although using a regular expression for this is probably an odd choice.

You will always get the job done with:

^[\s\S]{0,5000}$

• First there´s a character class that says: match whitespace (\s) or non-whitespace (\S) -- i.e any possible character
• Repeat that between zero and 5000 times.

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