我們在前端獲取當前時間：

var nowDate = new Date();

時間格式為:

Sun May 27 2018 19:28:09 GMT+0800 (中國標準時間)

但是我們想在頁面上顯示為 2007-1-31 8:30的格式，所以需要對時間進行轉換：

var nowDate = new Date();
 var year = nowDate.getFullYear();
 var month = nowDate.getMonth() + 1 < 10 ? "0" + (nowDate.getMonth() + 1)
  : nowDate.getMonth() + 1;
 var day = nowDate.getDate() < 10 ? "0" + nowDate.getDate() : nowDate
  .getDate();
var hour = nowDate.getHours(); 
var minutes = nowDate.getMinutes();
var seconds = nowDate.getSeconds();
 var dateStr = year + "-" + month + "-" + day +" " + hour +":" +minutes+":"+seconds; 
 console.log(dateStr);