<template>
  <div class="hello">
    <button @click="test">dafei_测试222</button>
    <h1>{{ msg }}</h1>
  </div>
</template>

<script>
export default {
  name: ‘HelloWorld‘,
  data () {
    return {
      msg: ‘Welcome to Your Vue.js App‘
    }
  },
  methods:{
    test(params) {
      
      let foo = 1;
      let bar = 2;
      let sum = foo + bar;
      console.log(sum);
      console.log(‘hello dafei‘)

    }
  }
}
</script>