JSFiddle - React, Tailwind, and code Playground

HTML

<input class="input-text submit" type="submit" id="add" name="submit" value="Add" style="text-align: center"/>    
<input class="input-text" type="text" name="ref" id="ref">

JavaScript

$(function(){
    $( "#add" ).click(function(e) {
        if (confirm('Not valid')) 
            $( "#ref" ).focus();      
    });    
});