Vue格式化金额

<template>
  <div id="app">
    <p>
      用我们学过的指令 v-model @ v-if和 methods 创建一个 Vue 实例;
      在输入框内输入数据，按下回车键，自动添加到页面中，点击删除，删除该指令;动手试试吧
    </p>
    <input
      type="text"
      placeholder="edit something "
      class="edit"
      autofocus
      v-model="items.content"
      @keydown.enter="addTask"
      @input="handleInput"
    >
    <ul class="task">
      <li v-for="(item,index) in list" :key="index">
        <input @click="changeState(index)" :checked="item.finished" type="checkbox">
        <span :class="{'finish':item.finished}"></span>
        <button @click="removeList(index)" class="del">删除</button>
      </li>
    </ul>
    <p class="empty" v-if="list.length===0">暂无内容</p>
  </div>
</template>

<script>
export default {
  name: "App",
  jjjj: "oooo",
  data() {
    return {
      //默认数据
      items: {
        content: "", //初始化内容为空，不能省略
        finished: false, //未完成
        deleted: false //未删除
      },
      list: []
    };
  },
  //列表
  methods: {
    //es6 的写法
    addTask() {
      //将任务存入数组
      this.list.push(this.items);
      //重置 items
      this.items = {
        content: "", //初始化内容为空，不能省略
        finished: false, //未完成
        deleted: false //未删除
      };
    },
    handleInput(e) {
      // 格式化金额 并保留两位小数
      let value = e.target.value.replace(/[^\d\.]/g, "");
      console.log("value", value);
      const nums = value.split(".");
      console.log(nums);
      if (nums.length > 1) {
        if (nums[0] && nums[1]) {
          value = nums[0] + "." + nums[1].substring(0, 2);
        } else {
          value = nums[0] ? nums[0] + "." : "";
        }
      }
      this.items.content = value;
    },
    //选中改变状态
    changeState(index) {
      let curState = this.list[index].finished;
      this.list[index].finished = !curState;
    },
    //删除
    removeList(index) {
      this.list.splice(index, 1);
    }
  }
};
</script>

<style>
div {
  width: 500px;
  margin: 30px auto;
}
.edit {
  display: block;
  line-height: 35px;
  box-sizing: border-box;
  padding-left: 20px;
  border-radius: 4px;
  border: 1px solid #ccc;
  box-shadow: 0 0 5px #ccc;
}
.task li {
  position: relative;
  padding: 10px 0;
  border-bottom: 1px solid #efefef;
  list-style: none;
}
.task li:last-child {
  border-bottom: 0;
}
.finish {
  text-decoration: line-through;
  color: #ccc;
}
.del {
  background: red;
  text-decoration: none;
  position: absolute;
  right: 0;
  font-size: 12px;
  border: 0;
  outline: 0;
  padding: 2px 5px;
  border-radius: 5px;
  color: #fff;
}
.empty {
  font-size: 13px;
  color: #000;
  text-align: center;
  padding: 10px 0;
}
</style>