vue获取当前时间：

<template>
  <div id="homeHeader" class="clearfix">
    <div class="nav clearfix">
     
        <a class="datastyle txt">{{date | formatDateTime}}</a>

    </div>
  </div>
</template>

<script>

export default {
  name: "homeHeader",
  data() {
    return {
      date: new Date()
    };
  },
  filters: {
    formatDateTime(value) {
      let date = new Date(value);
      let y = date.getFullYear();
      let MM = date.getMonth() + 1;
      MM = MM < 10 ? "0" + MM : MM;
      let d = date.getDate();
      d = d < 10 ? "0" + d : d;
      let h = date.getHours();
      h = h < 10 ? "0" + h : h;
      let m = date.getMinutes();
      m = m < 10 ? "0" + m : m;
      let s = date.getSeconds();
      s = s < 10 ? "0" + s : s;
      return y + "-" + MM + "-" + d + " " + h + ":" + m + ":" + s;
    }
  },
  mounted() {
    var that = this;
    this.timer = setInterval(() => {
      that.date = new Date(); //修改数据date
    }, 1000);
  },
  beforeDestroy() {
    if (this.timer) {
      clearInterval(this.timer); //在Vue实例销毁前，清除我们的定时器
    }
  },
  created() {

  },
  methods: {
  
  }
};
</script>