这段代码怎样用vue实现? <html> <head> <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script> <script type="text/javascript"> function display_alert() { alert('hamimelon!') } </script> </head> <body> <input type="button" onclick = "display_alert()" value="wo shi yige " /> </body> </html>