跳到主要内容

formatDate

TS JS Deno

Format date based on format staring, using regex match

const padLeft = (str: string | number, num: number = 2, fill = "0") =>
String(str).padStart(num, fill);

const formatDate = (formatStr: string, date: Date | string) => {
const d = new Date(date);
const time: any = {
YY: padLeft(d.getFullYear()).substr(2, 4),
YYYY: padLeft(d.getFullYear()),
MM: padLeft(d.getMonth() + 1),
DD: padLeft(d.getDate()),
hh: padLeft(d.getHours()),
mm: padLeft(d.getMinutes()),
ss: padLeft(d.getSeconds()),
M: padLeft(d.getMilliseconds(), 3),
};
return formatStr.replace(
new RegExp(`${Object.keys(time).join("|")}`, "g"),
(subStr: string) => {
return time[subStr] || "";
}
);
};
const date = new Date(2020, 7, 22, 22, 22, 22, 222);
formatDate("YYYY-DD-MM hh:mm:ss M", date); //"2020-22-08 22:22:22 222"

const date2 = new Date(2020, 7, 9, 9, 9, 9, 99);
formatDate("YYYY-DD-MM hh:mm:ss M", date2); // "2020-09-08 09:09:09 099"