标签选中和默认色值替换

<template>
  <div class="change">
    <button @click="change(index)" v-for="(item,index) in message" :class="{'active':index == n}">{{item}}</button>
  </div>
</template>

<script>
export default {
  name: 'change',
  data () {
    return {
      active: false,
      message: ['标签1', '标签2', '标签3', '标签4', '标签5'],
      n: 0
    }
  },
  methods: {
    change: function (index) {
        this.n = index
    }
  }
}
</script>

<style scoped>
  button{
    list-style:none;
    background: #fdeecb;
    color: #333;
    border: none;
    width: 60px;
    height: 30px;
    line-height: 30px;
    text-align: center;
  }
  .active{
    background: red;
  }
</style>