JSFiddle - React, Tailwind, and code Playground

HTML

<button id="review1" class="btn btn-primary reviewBtn" data-id="1">Review</button>
<button id="review2" class="btn btn-primary reviewBtn" data-id="2">Review</button>

JavaScript

var reviews = document.getElementsByClassName("reviewBtn");
var redirect = function() {
    var attribute = this.getAttribute("data-id");
    alert(attribute);
};


for (var i = 0; i < reviews.length; i++) {
    reviews[i].addEventListener('click', redirect, false);
}