Regular expression for validating url in javascript Free sex webcam chat rooms no sign up

28 Oct

The actual URL syntax is pretty complicated and not easy to represent in regex. Most of the simple-looking regexes out there will give many false negatives as well as false positives. See for amusement these efforts but even the end result is not good. Plus these days you would generally want to allow IRI as well as old-school URI, so we can link to valid addresses like: Indeed, the right way to validate URLs is not to use a regular expression. It's far more complex than one regexp, which is why it's always better to use a specialized library rather than roll your own regular expression.h://is valid URL. Following link might help you [link= You can use the URL regular expression at the place of the regular expression used in above example. But I'd consider it a good starting point with fewer false positives, and it also matches all the common URL's in this question.

Assume that this regex will be used for a public URL shortener written in PHP, so URLs like shouldn’t pass (even though they’re technically valid).

:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9] )*(?

Code can be found at: I changed it a little bit so that it's valid in Ruby.

Negative lookahead is used instead NOTE, that package does fuzzy search, not strict validation. If they copy it out and back into a browser so they may not know what's wrong with it upon visual inspection.

To clarify, I’m looking for a decent regular expression to validate URLs that were entered as user input with.