#b5.3.2 v-on 內聯特殊變量 

by BDeer

HTML

<div id="app">
<button v-on:click="fan('I Say ...', $event)">
  Submit
</button>
</div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#app {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  transition: all 0.2s;
}

li {
  margin: 8px 0;
}

h2 {
  font-weight: bold;
  margin-bottom: 15px;
}

del {
  color: rgba(0, 0, 0, 0.3);
}

Vue

let vmOn = new Vue({
 el:'#app',
 methods:{
  fan:function(message,event){
   if (event) event.preventDefault()
   alert(message)
  }

 }
})