vue怎样获取实时时间

const now = new Date();console.log(now.toLocaleDateString());console.log(now.toLocaleTimeString());

<template><p>{{ new Date() | date('yyyy-MM-dd HH:mm:ss') }}</p></template><script>export default {  filters: {    date(value, format) {      return new Date(value).toLocaleString(undefined, { format });    }  }}</script>