javascript日期时间操作

;(function (root, name ,factory) {

  if (typeof define === 'function' && define.amd) {
    define(name, factory);
  } else {
    root.DateUtil = factory();
  }

}(this,"dateUtil",function(require, exports, module) {

    //两位整数格式化，小于10高位补零
    var fmt_num = function(n){
        return n < 10 ? "0" + n : n;
    };

    
    var _ = {
        reg : /([yMdhms\$]{1,2})/g,
        days :["星期日","星期一","星期二","星期三","星期四","星期五","星期六"],
        yy : function(d){return d.getFullYear()},
        M  : function(d){return 1+d.getMonth()},
        MM : function(d){return fmt_num(1+d.getMonth())},
        d  : function(d){return d.getDate()},
        dd : function(d){return fmt_num(d.getDate())},
        h  : function(d){return d.getHours()},
        hh : function(d){return fmt_num(d.getHours())},
        m  : function(d){return d.getMinutes()},
        mm : function(d){return fmt_num(d.getMinutes())},
        s  : function(d){return d.getSeconds()},
        ss : function(d){return fmt_num(d.getSeconds())},
        $  : function(d){return this.days[d.getDay()]},
        $$ : function(d){return this.days[d.getDay()]}
    };

    return {
        format : function(date,format,rule){
            var m = {};
            for(var k in _){
                if( rule ){
                    m[k] = rule[k] || _[k]
                }else{
                    m[k] = _[k]
                }
            }
            return format.replace(_.reg,function(match,key){
                return m[key](date);
            });
        },
        parse : function(str,format){
            format = format || "yy/MM/dd hh:mm:ss";     //没有定义格式的话, 使用默认的格式

            var map = {}, nums = str.match( /\d{1,4}/g ), fmts = format.match( _.reg );
            for (var i = 0; i < fmts.length; i++) {
                map[ fmts[i] ] = nums[i];
            }; //for循环完成格式和数据的对应关系。

            //完成替换并且返回创建的Date结果。
            return new Date( "yy/MM/dd hh:mm:ss".replace(_.reg,function(match,key){
                return map[key] || 0;
            }) );
        }
    }   

}));

TEST： test.js

var DU = require("./").DateUtil;
var d = new Date(),
    str;

console.log( 'Format: "yy年M月d日"         \t-' + DU.format(d,"yy年M月d日") );
console.log( 'Format: "yy年MM月dd日 $"     \t-' + DU.format(d,"yy年MM月dd日 $") );
console.log( 'Format: "yy年MM月dd日 $"     \t-' + DU.format(d,"yy年MM月dd日 $",{days:"周日,周一,周二,周三,周四,周五,周六".split(",")}) );
console.log( 'Format: "yy年M月d日 h:m:s"   \t-' + DU.format(d,"yy年M月d日 h:m:s") );
console.log( 'Format: "yy年MM月dd日 hh:mm:ss"\t-' + (str = DU.format(d,"yy年MM月dd日 hh:mm:ss") ) );

console.log( 'Parse: "' + str + '":\n\t' + DU.parse(str, "yy年MM月dd日 hh:mm:ss") );

AMD 引入支持 amd.html

require.config({
    paths:{
        "dateUtil": "index"
    }
});
require(["dateUtil"],function(DateUtil){
    var 
        DU = DateUtil, 
        pre = document.getElementById('pre'), 
        time = document.getElementById('time'), 
        log = function(s) {
            pre.innerHTML += s + "\n";
        };
    var 
        d = new Date(),
        str;
    
    setInterval(function(){
        time.innerHTML = DU.format(new Date,"yy年MM月dd日 hh:mm:ss $");
    },300);

    log( 'Format: "yy年M月d日"         \t-' + DU.format(d,"yy年M月d日") );
    log( 'Format: "yy年MM月dd日 $"     \t-' + DU.format(d,"yy年MM月dd日 $") );
    log( 'Format: "yy年M月d日 h:m:s"   \t-' + DU.format(d,"yy年M月d日 h:m:s") );
    log( 'Format: "yy年MM月dd日 hh:mm:ss"\t-' + (str = DU.format(d,"yy年MM月dd日 hh:mm:ss") ) );
    log( 'Parse: "' + str + '":\n\t' + DU.parse(str, "yy年MM月dd日 hh:mm:ss") );
});