JSFiddle - React, Tailwind, and code Playground

HTML

<body>
    <button>Insert after</button> 
</body>

JavaScript

$(function(){
    var i = 1;
    $('button').on('click',function(){
        var r= $('<input type="button" class="dinamik" value="new button '+ i +' "/>');
        $("body").append(r);
        i++;
    });
});

$(function(){
    $('.dinamik').on('click', function(){
        var valueDeger = $(this).find('input').attr('value');
        alert("Value değeri: " + valueDeger);
    });
});