Mineplex2018-withcommit/Plugins/Mineplex.ChatSnapManager/web/main.js

const TAG_UUID = "data-player-uuid";

var elements = document.querySelectorAll('[' + TAG_UUID + ']'); // NodeList type

for (var i = 0; i < elements.length; i++)
{
    var element = elements.item(i);

    // TODO: This is temporary, hopefully we'll have a better solution, some sort of hover tooltip
    element.addEventListener("click", (function(element)
    {
        return function(e)
        {
            var uuid = element.getAttribute("data-player-uuid");
            alert("UUID: " + uuid);
        }
    })(element));

}