JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.2.2/jquery.min.js"></script>
<a href="#" id="save_b_v" >SAVE</a>

JavaScript

(function($){
                
        $('#save_b_v').one("click",function(){

            if(1==0){
                
                alert('Не заполнены поля');
            }
      else {
          $('#save_b_v').attr("id","");
          $.ajax({
              url: "/echo/json/",
              type: 'POST',
              async:true,
              response:'text',
              data:{'virt_id':1},
              success: function(data){
                        if(data === 'ok'){
                          alert('OK');
                          
                          }
                          
                          else {
                            alert(data);
                          }
                        
                         }
            });
      
        
    
        
      }
        })
        
})(jQuery);