js使用数组，对象，正则可以输出任何格式 function formatDate(date,format) { let obj={}; let items=["yyyy","yy","MM","M","dd","d","HH","H","hh","h","mm","m","ss","s","w"]; obj[items[0]]=date.getFullYear(); ////yyyy: 年份, 从 Date 对象以四位数字返回年份。 obj[items[1]]=obj[items[0]].toString().slice(2); //yy: 年份 obj[items[3]]=date.getM...