关于javascript:js-常用日期转换

获取 yyyy-mm-dd格局

function getDate(date){  var time = new Date(date)  var year = time.getFullYear() // 年  var month = ('0' + (time.getMonth() + 1)).slice(-2) // 月  var day = ('0' + time.getDate()).slice(-2) // 日  var mydate = year + '-' + month + '-' + day  return mydate}

如果也需获取 hh:mm:ss

function gettime(date){  var time=new Date(date)  var hours = (time.getHours()) > 9 ? (time.getHours()) : "0" + (time.getHours());  var minutes = (time.getMinutes()) > 9 ? (time.getMinutes()) : "0" + (time.getMinutes());  var seconds = (time.getSeconds()) > 9 ? (time.getSeconds()) : "0" + (time.getSeconds());  return hours+minutes+seconds}

如果应用elementUI 能够间接将工夫空间的格局 format 设置为‘yyyy-MM-dd HH:mm:ss’

yyyy-mm-dd 转 yyyymmdd

function replaceTime(str){  var reg= /-/g  return str.replace(reg, '')}

如 replaceTime('2021-06-01') 输入为 20210601

yyyymmdd 转yyyy-mm-dd

function replaceTime(str){  var pattern = /(\d{4})(\d{2})(\d{2})/ //输入正则  return str.replace(pattern, '$1-$2-$3')}

如 replaceTime('20210601') 输入为 2021-06-01