Do not fire an event when the variable value is empty

Question

I want to create a trigger in gtm that will not fire a tag when click url variable is empty. Is that possible? Or the other way round if it contains something

Click url, does not contain, undefined - that doesn't work

To be more precise, I've added a tag that tracks outbound links, but excluding my own domain isn't enough, because it also sends events when someone clicks a link that doesn't contain a target url like adding a job offer to shortlist.

Answer 1

You can create a trigger that only fires when a variable has a value by checking that the value does not match RegEx ^$. The RegEx ^$ will check for an empty string value, which is not what we want.