JSFiddle - React, Tailwind, and code Playground

HTML

<script>
class NoteController { // The controller class
    constructor() { // Initialization
        // ...
        alert('constructor called');
    }

    static CreateNote() { // The method to call - static
        // ....
        alert('create note');
    }
}
//var nc=new NoteController();
//console.log(nc);
</script>


<button type="button" id="btnCreateNote" onclick="NoteController.CreateNote()">Create</button> // call the method