js时间格式化

//时间格式化
Date.prototype.format = function (format) {
	/*
	 * eg:format="yyyy-MM-dd hh:mm:ss";
	 */
	if (!format) {
		format = "yyyy-MM-dd hh:mm:ss";
	}
	
	var o = {
		"M+" : this.getMonth() + 1, // month
		"d+" : this.getDate(), // day
		"h+" : this.getHours(), // hour
		"m+" : this.getMinutes(), // minute
		"s+" : this.getSeconds(), // second
		"q+" : Math.floor((this.getMonth() + 3) / 3), // quarter
		"S" : this.getMilliseconds()
		// millisecond
	};
	
	if (/(y+)/.test(format)) {
		format = format.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
	}
	
	for (var k in o) {
		if (new RegExp("(" + k + ")").test(format)) {
			format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length));
		}
	}
	return format;
};

 

 

 <script>
function formatDate(date, format) {
    if (!date) return;
    if (!format) format = "yyyy-MM-dd";
    switch(typeof date) {
        case "string":
            date = new Date(date.replace(/-/, "/"));
            break;
        case "number":
            date = new Date(date);
            break;
    } 
    if (!date instanceof Date) return;
    var dict = {
        "yyyy": date.getFullYear(),
        "M": date.getMonth() + 1,
        "d": date.getDate(),
        "H": date.getHours(),
        "m": date.getMinutes(),
        "s": date.getSeconds(),
        "MM": ("" + (date.getMonth() + 101)).substr(1),
        "dd": ("" + (date.getDate() + 100)).substr(1),
        "HH": ("" + (date.getHours() + 100)).substr(1),
        "mm": ("" + (date.getMinutes() + 100)).substr(1),
        "ss": ("" + (date.getSeconds() + 100)).substr(1)
    };    
    return format.replace(/(yyyy|MM?|dd?|HH?|ss?|mm?)/g, function() {
        return dict[arguments[0]];
    });                
}

alert(formatDate("2010-04-30", "yyyy-MM-dd HH:mm:ss"));
alert(formatDate("2010-4-29 1:50:00", "yyyy-MM-dd HH:mm:ss"));
 </script>