Check if url is valid or not
7336
What is the best regular expression to check if a string is a valid URL?
69080
How to extract a GET parameter from the URL in Javascript?
64829
python: check if url to jpg exists
41380
How to check if a given Regex is valid?
11523
Is it valid to have more than one question mark in a URL?
134315
How to test if a string is JSON or not?
59599
What is a good regular expression to match a URL?
86890
If url is /store/*
148755
How to check if string contents have any HTML in it?
123064
NSRegularExpression to validate URL
149300
How do I apply URL normalization rules in PHP?
156630
How to check if page exists using JavaScript
59229
How do I check whether a value in a string is an IP address
28862
Which characters make a URL invalid?
42559
(Built-in) way in JavaScript to check if a string is a valid number
2940
How to add http:// if it doesn't exist in the URL
131288
form.valid() should not display validation text?