JSFiddle - React, Tailwind, and code Playground

HTML

<div class='unsubscribe'>
    <a id='us1' href='#' onclick="subscribe('u', 1)">
        <img src='/unsubscribe.jpg' alt='unsubscribe' />
    </a>
</div>
<script type='text/javascript'>
    document.getElementById('us1').onclick = function(){
        // Subscribe u
    //subscribe('u', 1);

        // Set all future clicks to subscribe s
        this.onclick = function(){
            subscribe('s', 1);
        };
    };
    
    function subscribe(letter, id){
        alert(letter+': '+id);
    }
</script>