vue.js中如何绑定事件

<button @click="deleteData('111')">执行方法传值111</button>

<button @click="deleteData('222')">执行方法传值2222</button>

<button data-aid='123' @click="eventFn($event)">事件对象</button>

eventFn(e){

          console.log(e);

          // e.srcElement  dom节点

          e.srcElement.style.background='red';

          console.log(e.srcElement.dataset.aid);  /*获取自定义属性的值*/

        }