$(document).ready(function () {
    "use strict"; // Start of use strict
    //summernote
    $('#summernote').summernote({
        placeholder: 'Hello Bootstrap 4',
        tabsize: 2,
        height: 300, // set editor height
        minHeight: null, // set minimum height of editor
        maxHeight: null, // set maximum height of editor
        focus: true // set focus to editable area after initializing summernote
    });
});