$(document).ready(function() {    
    let file_input = document.querySelector('#calculator #fileinput');
    let file_input_label = document.querySelector('#calculator .element[data-element="Wgraj plik graficzny"] > label');
    
    console.log("file inpuot label", file_input_label);
    
    file_input.addEventListener('change', () => {
      const cv_span_initial = file_input_label.innerText;
      file_input_label.innerText = file_input.files[0].name;    
    });
    
});