The rust function that is used in the index.js file to handle the clicks on the JS click button

click.rs

// js_click_event_handler is called by the js code in a more 
// 'tradiitional event listerner approach. It will popup an
// alert dialog and display the click event information
#[wasm_bindgen]
pub fn js_click_event_handler(evt: web_sys::MouseEvent) {
    super::alert(&format!("[js handler]\n{:#?}", Click::new(evt)));
}