SOURCE

const options = {
    methods: {
        passDefault(event) {
            console.log('我是默认传递的event：');
            console.log(event);
        },
        passExplicit(event) {
            console.log('我是显式传递的event：');
            console.log(event);
        },
        passMore(event, val) {
            console.log('我是显式传递的event和其它参数：');
            console.log(event);
            console.log(val);
        }
    }
}

let app = Vue.createApp(options);
app.mount("#root");

<div id="root">
	<button @click="passDefault">默认传递event</button>
    <hr>
	<button @click="passExplicit($event)">显示传递event</button>
     <hr>
	<button @click="passMore($event, 123)">显示传递event和其它参数</button>
</div>