JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#" class="green">Green</a>
<a href="#" class="red">Red</a>
<a href="#" class="blue">Blue</a>

JavaScript

var colors = ['green', 'red', 'blue'],
    clickEvent = function(position) {
        return function() {
            alert("My favorite color is " + colors[position]);
        };
    };

for(var i=0; i<colors.length; i++) {
    document.getElementsByClassName(colors[i])[0].onclick = clickEvent(i);
}