Sweetalert loading center popup

1. Load css/js
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/sweetalert2/5.3.8/sweetalert2.css"/>
    <script src="https://cdn.jsdelivr.net/sweetalert2/5.3.8/sweetalert2.js"></script>

2. Define function

    const showLoading = function() {
        swal({
            title: '',
            text: '<b>Be patient.</b><br/>This might take a few moments to load chatbot questions.',
            allowEscapeKey: false,
            allowOutsideClick: false,
            //timer: 4500,
            onOpen: () => {
                swal.showLoading();
            }
        })
    };
    
    function closeSwalWhilePageLoaded(){
        setTimeout(() => {
            swal.close();
        }, 500);
    }
    
3. Call show loading
      showLoading();

4. Call function to close loading
      closeSwalWhilePageLoaded();