js中评论发送的时间，几天前，几小时前，刚刚_js算评论时间差吗

js代码

<script type="text/javascript">
			
			function timeShow(time) {
				// 保留原始的时间
				let result = time;
				
				//把分，时，天，周，半个月，一个月用毫秒表示
				let minute = 1000 * 60; 
				let hour = minute * 60;
				let day = hour * 24;
				let week = day * 7;
				let halfamonth = day * 15;
				let month = day * 30;
				
				//获取当前时间毫秒
				let now = new Date().getTime(); 
				
				// 截取转换下
				time = time.substring(0, 18);

				// 转化成毫秒数
				let timestamp = new Date(time).getTime();	
							
				//时间差
				let diffValue = now - timestamp; 

				// 超过当前时间,直接return
				if (diffValue < 0) {
					return result;
				}
				
				//计算时间差的分，时，天，周，月
				let minC = diffValue / minute; 
				let hourC = diffValue / hour;
				let dayC = diffValue / day;
				let weekC = diffValue / week;
				let monthC = diffValue / month;
				
				if (monthC >= 1 && monthC <= 3) {
					result = parseInt(monthC) + "月前"
				} else if (weekC >= 1 && weekC <= 3) {
					result = parseInt(weekC) + "周前"
				} else if (dayC >= 1 && dayC <= 6) {
					result = parseInt(dayC) + "天前"
				} else if (hourC >= 1 && hourC <= 23) {
					result = parseInt(hourC) + "小时前"
				} else if (minC >= 1 && minC <= 59) {
					result = parseInt(minC) + "分钟前"
				} else if (diffValue >= 0 && diffValue <= minute) {
					result = "刚刚"
				} else {
					// 时间太久
					result = time;
				}
				
				// 最后return出来
				return result;

			}
			
			console.log(timeShow("2021-01-14 00:00:00"))
		</script>
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