function formatTime(date, format){
if (typeof date == "number") {
date = new Date(date);
var o = {
"y+":date.getFullYear,
"M+": date.getMonth() + 1, //月份
"d+": date.getDate(), //日
"h+": date.getHours(), //小时
"m+": date.getMinutes(), //分
"s+": date.getSeconds(), //秒
"q+": Math.floor((date.getMonth() + 3) / 3), //季度
"S": date.getMilliseconds() //毫秒
};
var fmt = format || "yyyy-MM-dd hh:mm:ss";
if (/(y+)/.test(fmt))
fmt = fmt.replace(RegExp.$1, (date.getFullYear() + "").substr(4 - RegExp.$1.length));
for (var k in o)
if (new RegExp("(" + k + ")").test(fmt))
fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
return fmt;
} else {
return date;
}
}
console.log(formatTime(Date.now(),'yyyy'))//2019
console.log(formatTime(Date.now(),'yyyy-MM-dd'))//2019-11-26
console.log(formatTime(Date.now(),'yyyy-MM'))//019-11
console.log(formatTime(Date.now()))//2019-11-26 12:00:10
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