JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" id="linkField" class="form-control " placeholder="Enter the link to track">
<input type="text" id="emailField" class="form-control " placeholder="Enter the Email" style="display:none!important">
<input type="button" class="btn-success btn lightGreen" value="SHORTEN & TRACK">

JavaScript

$(document).ready(function() {
        $('#linkField').click(function() {
            $("#emailField").show();
        }); 
    });