vue中可以绑定多个事件吗

<button id="test" @click="test1">按钮</button>

new Vue({
    el:"#test",
    data:"",
    methods:{
        test1:function(){
            alert("test1");
            this.test2();
            this.test3();
        },
        test2:function(){
            alert("test2");
        },
        test3:function(){
            alert("test3");
        }
    }
})

<el-button type="primary" size="small" @click="add1();add2();">123</el-button>

methods:{
    add1(){
        console.log(123)
    },
    add2(){
        console.log(456)
    },
    }

// 原生事件绑定
<div @click="fn()"></div>
// 组件绑定
<my-component @click.native="fn" @click="fn1"></my- component>

let compiler = require('vue-template-compiler'); //vue-loader
let r1 = compiler.compile('<div @click="fn()"></div>'); 
let r2 = compiler.compile('<my-component @click.native="fn" @click="fn1"></my- component>'); console.log(r1); 
// {on:{click}} console.log(r2); 
// {nativeOn:{click},on:{click}}

// 前者
with (this){return _c('div',{on:{"click":function($event){return fn()}}})}
// 后者
with (this){return _c('my-component',{on:{"click":fn1},nativeOn:{"click":function($event){return fn($event)}}})}

function updateDOMListeners (oldVnode: VNodeWithData, vnode: VNodeWithData) { 
	if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) { return }
	const on = vnode.data.on || {} const oldOn = oldVnode.data.on || {} 
	target = vnode.elm 
	nORMalizeEvents(on) 
	updateListeners(on, oldOn, add, remove, createOnceHandler, vnode.context) 
	target = undefined 
}
function add ( 
	name: string, 
	handler: Function, 
	capture: boolean, 
	passive: boolean 
) {
	target.addEventListener( // 给当前的dom添加事件 
		name, 
		handler, 
		supportsPassive 
		? {  capture, passive  } 
		: capture 
	) 
}

export function updateComponentListeners ( 
	vm: Component, 
	listeners: Object, 
	oldListeners: ?Object 
) {
	target = vm updateListeners(
		listeners, oldListeners || {}, 
		add, 
		remove,
		createOnceHandler, vm)
		target = undefined 
}
function add (event, fn) { 
	target.$on(event, fn) 
}

vm.$on( event, callback )

Vue.prototype.$on = function (event, fn) {
    const vm: Component = this
    if (Array.isArray(event)) {
        for (let i = 0, l = event.length; i < l; i++) {
            this.$on(event[i], fn)
        }
    } else {
        (vm._events[event] || (vm._events[event] = [])).push(fn)
    }
    return vm
}