<div id="demo">
 <a v-on="click: onClick">触发一个方法函数</a>
 <a v-on="click: n++">触发一个表达式</a>
</div>

 new Vue({
 el: '#demo',
 data: {
  n: 0
 },
 methods: {
  onClick: function (e) {
  console.log(e.targetVM.n);
  console.log(e.target.tagName);// "A"
  console.log(e.targetVM === this);// true
  }
 }
 });

<ul id="list">
 <li v-repeat="item in items" v-on="click: toggle(item)">
 {{item.text}}
 </li>
 <button v-on="click: submit('hello!', $event)">Submit</button>
</ul>

 new Vue({
 el: '#list',
 data: {
  items: [
  { text: 'one', done: true },
  { text: 'two', done: false }
  ]
 },
 methods: {
  toggle: function (item) {
  console.info(item.done);
  item.done = !item.done;
  console.info(item.done);
  },
  submit: function (msg, e) {
  e.stopPropagation();
  console.info(msg + ' submit is called!');
  }
 }
 })

 <!-- 只有当 keyCode 等于 13 时才调用方法 -->
 <input v-on="keyup:mySubmit | key 13">

<!-- 效果同上 -->
<input v-on="keyup:submit | key 'enter'">