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Currently I have an input box which will detect the URL and parse the data.
So right now, I am using:
var urlR = /^(?:([A-Za-z]+):)?(\/{0,3})([0-9.\-A-Za-z]+) (?::(\d+))?(?:\/([^?#]*))?(?:\?([^#]*))?(?:#(.*))?$/; var url= content.match(urlR); The problem is, when I enter a URL like www.google.com, its not working. when I entered http://www.google.com, it is working.
I am not very fluent in regular expressions. Can anyone help me?
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URL regular expressions can be used to verify if a string has a valid URL format as well as to extract an URL from a string.
i) makes the regex case insensitive. (? s) for "single line mode" makes the dot match all characters, including line breaks.
When you create a URL input with the proper type value, url , you get automatic validation that the entered text is at least in the correct form to potentially be a legitimate URL. This can help avoid cases in which the user mis-types their web site's address, or provides an invalid one.
For example, the replacement pattern $1 indicates that the matched substring is to be replaced by the first captured group.
Regex if you want to ensure URL starts with HTTP/HTTPS:
https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*) If you do not require HTTP protocol:
[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*) To try this out see http://regexr.com?37i6s, or for a version which is less restrictive http://regexr.com/3e6m0.
Example JavaScript implementation:
var expression = /[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)?/gi; var regex = new RegExp(expression); var t = 'www.google.com'; if (t.match(regex)) { alert("Successful match"); } else { alert("No match"); }If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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