URL validation including domain

[CN-L]

Hi Community,

I'm after some collective assistance to help me with an onChange Catalog Client Script please.

Goal: When a user enters a URL into a single line text variable [provide_url], I want to ensure they have entered a valid URL including the domain.

What I've Done: I created the below script which validates successfully if the user enters content that starts with http, https, or www however, I'd like to expand this if possible to check for a domain at the end i.e. .co.uk, .com, etc.

Current script:

function onChange(control, oldValue, newValue, isLoading) {
    if (isLoading || newValue == '') {
        return;
    }

    var url = g_form.getValue('provide_url');

    var re = /^(http[s]?:\/\/){0,1}(www\.){0,1}[a-zA-Z0-9\.\-]+\.[a-zA-Z]{2,5}[\.]{0,1}/;

    if (!re.test(url)) {
        g_form.showFieldMsg('provide_url', 'Please enter a valid URL');
        return false;
    }
}

I'm assuming that I need to add some extra logic to end of this statement but my brain is failing to work it out:

var re = /^(http[s]?:\/\/){0,1}(www\.){0,1}[a-zA-Z0-9\.\-]+\.[a-zA-Z]{2,5}[\.]{0,1}/;

Any help would be greatly appreciated!

[Kieran Anson]

Rather than using an onChange client script, have you looked into Variable Regex Validation?

SN provide an OOTB regex validation for URLs

Field validation: Regular Expressions - ServiceNow Community

OOTB Regex: (((ftp|http|https):\/\/)|(www\.))([-\w\.\/#$\?=+@&%_:;]+)

A copy of the OOTB regex could be created, with an additional capture group

^(((ftp|http|https):\/\/)|(www\.))([-\w\.\/#$\?=+@&%_:;]+)(?:\.com|\.co\.uk)$

[CN-L]

I did take a look at the OOTB regex validation however I didn't think of creating a copy *facepalm*

Because of the sheer number of possible domains, is there a way to validate that the URL ends with 2-3 characters . 2-3 characters, rather than listing them out?

[Tanushree Maiti]

Hi @CN-L 

Try with this regex. It will work.

^(https?:\/\/)?([a-zA-Z0-9-]+\.)+[a-zA-Z]{2,}$

[CN-L]

Thanks to @Kieran Anson and @Tanushree Maiti - after some trial and error following your suggestions, I was able to get this working in my PDI with the following regex:

^(((ftp|http|https):\/\/)|(www\.))([-\w\.\/#$\?=+@&%_:;])+(\.[a-z]{2,})$