I want to use JavaScript (I can also use jQuery) to do check whether a string matches the regex ^([a-z0-9]{5,})$, and get a true or false result. match() seems to check whether part of a string …

Sep 5, 2008 · Keep in mind that one should not rely on JavaScript validation alone, as JavaScript can be easily disabled by the client. Furthermore, it is important to validate on the server side. …

The function uses the javascript string replace function with the second parameter (following the regular expression) is a null string ('') to replace those characters that are not alphanumeric …

The m0 argument represents the full matched substring {0}, {1}, etc. m1 represents the first matching group, i.e. the part enclosed in brackets in the regex which is 0 for the first match.

JavaScript regular expressions and sub-matches Asked 16 years, 5 months ago Modified 4 months ago Viewed 36k times

javascript regex for special characters Asked 12 years, 1 month ago Modified 2 years, 11 months ago Viewed 372k times

Possible Duplicate: A comprehensive regex for phone number validation Validate phone number with JavaScript I'm trying to write a regular expression to validate US phone number of format …

You need the put the characters you wish to split on in a character class, which tells the regular expression engine "any of these characters is a match". For your purposes, this would look …

Now that Javascript has lookbehind (as of ES2018), on newer environments, you can avoid groups entirely in situations like these. Rather, lookbehind for what comes before the group …

Sep 28, 2010 · John Gruber's Liberal, Accurate Regex Pattern for Matching URLs is also good. See this SO question for how to modify it to work in Javascript.