JSFiddle - React, Tailwind, and code Playground

HTML

<div id="insertBanner">
 <form id="form" action="javascript:void(0);" method="post">
  <input type="text" id="title" name="title" style="width: 300px;" placeholder="Titel" autofocus required>
  <input type="url" id="url" name="url" style="width: 300px;" placeholder="Link (Youtube, etc.)">
 <input type="submit" id="insert" value="HinzufĂĽgen">
 </form>
   <span id="result"></span>
</div>

JavaScript

$("#insert").click(function(){
       
        var url = "insertInput.php";
         alert("button clicked");
         clearInput();
        $post(
             url,
             data,
             function(info){
                 $("#result").html(info);
             }
         );
         
          alert("button clicked");
    });
    function clearInput(){
        $("#form :input").each(function(){
          $(this).val("");
        });
    }