Edit in JSFiddle

new Vue({
  el: '#app',
  methods: {
    handleClick: function() {
      this.$toast('Hello world!')
    }
  }
})

<script src="//unpkg.com/vue/dist/vue.js"></script>
<script src="//unpkg.com/mint-ui/lib/index.js"></script>
<div id="app">
  <mt-button @click.native="handleClick">按钮</mt-button>
</div>

@import url("//unpkg.com/mint-ui/lib/style.css")