GTM up and running, main UA tag in place along with a ClickListener tag.
To reduce the number of macros, i use dataLayer variable Macros for event category, action, label, value & interaction, so they can be used for many rules and tags.
So i want to collect data from one link/button (Add to Fav), i add a rule to listen for the click using {{event}} equals gtm.click and {{Event Label}} equals Add_to_Fav (the label i push to the DL via onclick.
All good so far, but i need to create another UA tag (Track Type - event) that fires on the rule made previously. And this is my question, using this method seems to create many tags. If i have another 20 links that i want to collect data from, do i need to keep creating tags like this. Surely, this will affect page load speed with many tags firing on all pages.
Hope thats all clear.
If you need to retrieve the link text to use it as an event label you do not need many many event tracking tags, that would be horribly verbose. Instead you can use a custom javascript macro - the cool thing about them being that you can use existing macros inside your custom function.
If you create a click listener or link click listener this will create a few macros - one of them is {{element}}, which is the DOM element that received a click.
Now you create a macro of the type "custom java script", which must contain an anonymous function with a return value.
The barebones version of a function that retrieves the text of a clicked link would be
function() {
var el = {{element}};
return el.innerText;
}
(actually you do not need the variable assigment, you could use {{element}}.innerText directly).
You name the macro e.g. Linktext and use the macro {{Linktext}} in your single event tracking tag where it will dynamically be set to the value of the text of the clicked link (although you might want to check cross browser support for innerText, or maybe use innerHTML instead which serves in you use case probably the same purpose).