JSFiddle - React, Tailwind, and code Playground

HTML

<span class="platin-input-tite" required>Adı</span>
<input type="text" name="name-surname" id="platin-baby-name" class="platn-input"/>
<button class="platin-add-child">Ekle</button>
<h2 class=".select-baby-name"></h2>

JavaScript

$(function(){
    $(".platin-add-child").on('click', function() {
        var getvalue = $("#platin-baby-name").val();
        $(".select-baby-name").text(getvalue);
        console.log(getValue);
    });
})