format date utc

formatDate.js

// borrowed from http://www.cnblogs.com/duanhuajian/p/4485106.html
// change: use utc time instead
function formatDate (date, fmt) {
    var o = {
        "M+" : date.getUTCMonth()+1,
        "d+" : date.getUTCDate(),
        "h+" : date.getUTCHours()%12 == 0 ? 12 : date.getUTCHours()%12,
        "H+" : date.getUTCHours(),
        "m+" : date.getUTCMinutes(),
        "s+" : date.getUTCSeconds(),
        "q+" : Math.floor((date.getUTCMonth()+3)/3),
        "S"  : date.getUTCMilliseconds()
    };
    var week = {
        "0" : "/u65e5",
        "1" : "/u4e00",
        "2" : "/u4e8c",
        "3" : "/u4e09",
        "4" : "/u56db",
        "5" : "/u4e94",
        "6" : "/u516d"
    };
    if(/(y+)/.test(fmt)){
        fmt=fmt.replace(RegExp.$1, (date.getUTCFullYear()+"").substr(4 - RegExp.$1.length));
    }
    if(/(E+)/.test(fmt)){
        fmt=fmt.replace(RegExp.$1, ((RegExp.$1.length>1) ? (RegExp.$1.length>2 ? "/u661f/u671f" : "/u5468") : "")+week[date.getUTCDay()+""]);
    }
    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;
}