<ul>
    <li v-for="(item,index) in moneyList" :key="index" :class="flag==index?'choosed':'choosed1'" @click="choosePay(index)"> {{item}}元 </li>
</ul>

css代码:

ul,li{
    display: inline-block;
  }
  li{
    width:29%;
    margin:5px 5px;
    padding:10px 0;
    font-size: 0.8em;
    text-align: center;
    border-radius: 5px;
  }
  .choosed{
    color: #fff;
    border: 1px solid #0e93f6;
    background-color: #0e93f6;
  }
  .choosed1{
    color: #7c7e7e;
    border: 1px solid #7c7e7e;
  }

js代码：

data () {
   moneyList: [10, 100, 200, 300, 400, 500, 600],
   flag: -1,
   value: '' // 点击li获取的值
},
methods: {
	choosePay (index) {
      	let t = this
     	t.flag = index
     	t.value = moneyList[index]
    },
}