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Detailed explanation of conversion methods between js timestamp and date format

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Release: 2017-12-13 09:11:53
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This article mainly introduces the conversion between js timestamp and date format in detail. It has certain reference value. Interested friends can refer to it. I hope it can help everyone.

1. Convert timestamp to date format

// 简单的一句代码
var date = new Date(时间戳); //获取一个时间对象

/**
 1. 下面是获取时间日期的方法,需要什么样的格式自己拼接起来就好了
 2. 更多好用的方法可以在这查到 -> http://www.w3school.com.cn/jsref/jsref_obj_date.asp
 */
date.getFullYear(); // 获取完整的年份(4位,1970)
date.getMonth(); // 获取月份(0-11,0代表1月,用的时候记得加上1)
date.getDate(); // 获取日(1-31)
date.getTime(); // 获取时间(从1970.1.1开始的毫秒数)
date.getHours(); // 获取小时数(0-23)
date.getMinutes(); // 获取分钟数(0-59)
date.getSeconds(); // 获取秒数(0-59)
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Example

// 比如需要这样的格式 yyyy-MM-dd hh:mm:ss
var date = new Date(1398250549490);
Y = date.getFullYear() + '-';
M = (date.getMonth()+1 < 10 ? &#39;0&#39;+(date.getMonth()+1) : date.getMonth()+1) + &#39;-&#39;;
D = date.getDate() + &#39; &#39;;
h = date.getHours() + &#39;:&#39;;
m = date.getMinutes() + &#39;:&#39;;
s = date.getSeconds(); 
console.log(Y+M+D+h+m+s); //呀麻碟
// 输出结果:2014-04-23 18:55:49
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2. Convert date format into timestamp

// 也很简单
var strtime = &#39;2014-04-23 18:55:49:123&#39;;
var date = new Date(strtime); 
//传入一个时间格式,如果不传入就是获取现在的时间了,这样做不兼容火狐。
// 可以这样做
var date = new Date(strtime.replace(/-/g, &#39;/&#39;));

// 有三种方式获取,在后面会讲到三种方式的区别
time1 = date.getTime();
time2 = date.valueOf();
time3 = Date.parse(date);

/* 
三种获取的区别:
第一、第二种:会精确到毫秒
第三种:只能精确到秒,毫秒将用0来代替
比如上面代码输出的结果(一眼就能看出区别):
1398250549123
1398250549123
1398250549000 
*/
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3. Date() parameter form has 7 Kind of

new Date("month dd,yyyy hh:mm:ss");
new Date("month dd,yyyy");
new Date("yyyy/MM/dd hh:mm:ss");
new Date("yyyy/MM/dd");
new Date(yyyy,mth,dd,hh,mm,ss);
new Date(yyyy,mth,dd);
new Date(ms);
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For example:

new Date("September 16,2016 14:15:05");
new Date("September 16,2016");
new Date("2016/09/16 14:15:05");
new Date("2016/09/16");
new Date(2016,8,16,14,15,5); // 月份从0~11
new Date(2016,8,16);
new Date(1474006780);
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How about everyone learned it? Hurry up and try it yourself.

Related recommendations:

Detailed code sharing of c# timestamp and js timestamp mutual conversion methods

and PHP The date function has the same usage as the JS timestamp formatting function

How to convert js timestamp to time format

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