JS/date format 다루기

 

date 표시할때 매번 귀찮다.

공통으로 만들어 사용하고 있다.

 

유틸

/**
 * Prototype
 *
 * @author djkang
 * @since 2020. 07. 10.
 */

/**
 * Date method attach
 * @param f
 * @returns {string|*}
 */
Date.prototype.format = function (f) {
    if (!this.valueOf()) return " ";

    var aWeek = ['일', '월', '화', '수', '목', '금', '토'];
    var d = this;

    return f.replace(/(YYYY|YY|MM|DD|W|H24|HH|MINUTE|ss|a\/p)/gi, function ($1) {
        switch ($1) {
            case "YYYY":
                return d.getFullYear();
            case "YY":
                return (d.getFullYear() % 1000).zf(2);
            case "yy":
                return (d.getFullYear() % 1000);
            case "MM":
                return (d.getMonth() + 1).zf(2);
            case "mm":
                return (d.getMonth() + 1);
            case "DD":
                return d.getDate().zf(2);
            case "dd":
                return d.getDate();
            case "W":
                return aWeek[d.getDay()];
            case "H24":
                return d.getHours().zf(2);
            case "h24":
                return d.getHours();
            case "HH":
                return ((h = d.getHours() % 12) ? h : 12).zf(2);
            case "hh":
                return ((h = d.getHours() % 12) ? h : 12);
            case "MINUTE":
                return d.getMinutes().zf(2);
            case "minute":
                return d.getMinutes();
            case "SS":
                return d.getSeconds().zf(2);
            case "ss":
                return d.getSeconds();
            case "a/p":
                return d.getHours() < 12 ? "오전" : "오후";
            default:
                return $1;
        }
    });
};
String.prototype.string = function (len) {
    var s = '', i = 0;
    while (i++ < len) {
        s += this;
    }
    return s;
};
String.prototype.zf = function (len) {
    return "0".string(len - this.length) + this;
};
Number.prototype.zf = function (len) {
    return this.toString().zf(len);
};

 

 

사용방법

console.log(new Date('2020-03-12 14:30:20').format('H24:MINUTE'));
console.log(new Date().format('YYYY. MM. DD H24:MINUTE'));