js时间戳 格式化

Date.prototype.format =function(datetime){
	var date = new Date(datetime);//时间戳为10位需*1000，时间戳为13位的话不需乘1000
	var year = date.getFullYear(),
	    month = ("0" + (date.getMonth() + 1)).slice(-2),
	    sdate = ("0" + date.getDate()).slice(-2),
	    hour = ("0" + date.getHours()).slice(-2),
	    minute = ("0" + date.getMinutes()).slice(-2),
	    second = ("0" + date.getSeconds()).slice(-2);
	// 拼接
	var result = year + "-"+ month +"-"+ sdate +" "+ hour +":"+ minute +":" + second;
	// 返回
	return result;
}

formatDate(datetime) {
    var date = new Date(datetime);//时间戳为10位需*1000，时间戳为13位的话不需乘1000
    var year = date.getFullYear(),
        month = ("0" + (date.getMonth() + 1)).slice(-2),
        sdate = ("0" + date.getDate()).slice(-2),
        hour = ("0" + date.getHours()).slice(-2),
        minute = ("0" + date.getMinutes()).slice(-2),
        second = ("0" + date.getSeconds()).slice(-2);
    // 拼接
    var result = year + "-"+ month +"-"+ sdate +" "+ hour +":"+ minute +":" + second;
    // 返回
    return result;
}