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How to test regex matching on a comma separated list?
Test it OnLine. If using perl or PCRE regexps, you can avoid repetition by using things like (?1) to refer to the regexp in the first capture group: Which would match on any non-empty comma separated list of 3 character words. Change to:
What does the comma and semicolon mean in regex?
^[0-9,;]+$. Starting with the carat ^ indicates a beginning of line. The [ indicates a character set. The 0-9 indicates characters 0 through 9, the comma , indicates comma, and the semicolon indicates a ;.
How can I get my regex to match 3 letter words?
My real regex is not matching 3-letter-words, but something bigger, and repeating the regex is ugly. How can this be fixed? You can give a name to your big regex in PCRE like: Everything after the ? will be recorded with the name given. Test it OnLine.
How to write a regular expression for a list?
Hey, I can’t figure out how to write a regular expression for my website, I would like to let the user input a list of items (tags) separated by comma or by comma and a space, for example “apple, pie,applepie”. Would it be possible to have such regexp? Thanks!
How to determine if comma separated values are valid?
I have a string with comma separated alphanumeric values. The values are considered valid if they are exactly 2 characters in length, and if they have at least 1 alphabetical character. If all the values are valid then I would like to “capture” the entire string including commas.
Do you need a comma to type 1234 in regex?
I tried [0-8,]* but it seems to accept 1234 as valid. It is not requiring a comma and it is letting me type in a number larger than 8. I am not sure why.
Can a list be quoted without a comma?
List elements may be quoted, unquoted or empty. Commas inside a pair of quotation marks are not matched. Reference. This one will reject extraneous commas at the start or end of the line, if that’s important to you. Replace possible|value|patterns with a regex that matches your allowed values.