Three of the same codes on one webpage

I have 3 popups on the same page. I found a javascript code to close the div when clicked outside the div. The problem is when i add one it works when i add 2 or 3 none work. Is it possible to have all 3 on the same page.

// Closes the menu in the event of outside click
        window.onclick = function(event) {
            if (!event.target.matches('.fa fa-trophy')) {
             
                var dropdowns =...

Code (JavaScript):

Three of the same codes on one webpage

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