在 jQuery 中转换 UNIX 时间戳
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Convert UNIX timestamp in jQuery
提问by Jerry Jones
Well, I fetch timestamp from my table using a php page with getJSON. Here is the structure.
好吧，我使用带有 getJSON 的 php 页面从我的表中获取时间戳。这是结构。
main.php --> using getJSON (abc.php) --> value from my table
main.php --> 使用 getJSON (abc.php) --> 表中的值
Is there any way to convert this UNIX timestamp into this format:
有什么方法可以将此 UNIX 时间戳转换为这种格式：
dd-mm-yyyy at hh:mm am
dd-mm-yyyy 在 hh:mm am
回答by Konstantin Pozhidaev
The Unix timestamp is the number of seconds elapsed since 1970 (epoch). You would need to convert that to a date object in JS:
Unix 时间戳是自 1970 年（纪元）以来经过的秒数。您需要将其转换为 JS 中的日期对象：
var date = new Date(unixTimestamp*1000); // *1000 because of date takes milliseconds
Once you have the date object, you can use any of the techniques mentioned in the following post: How to format a JavaScript date
拥有日期对象后，您可以使用以下帖子中提到的任何技术： 如何格式化 JavaScript 日期
回答by Mahi M.
var dt=eval(unixtimestamp*1000);
var myDate = new Date(dt);
return(myDate.toLocaleString());
this will give an output like:10/27/2014, 12:58:45 PM
这将给出如下输出：10/27/2014, 12:58:45 PM
回答by Finny Abraham
For converting UNIX timestamp to the given format dd-mm-yyyy at hh:mm am; you have to first construct a JavaScript Date object and then use either the native JavaScript Date methods or the date.format jQuery Library.
用于将 UNIX 时间戳转换为给定格式dd-mm-yyyy at hh:mm am；您必须首先构造一个 JavaScript Date 对象，然后使用原生 JavaScript Date 方法或 date.format jQuery 库。
Step 1: Constructing Date Object
第 1 步：构造日期对象
var timestampInMilliSeconds = unixTimeStamp*1000; //as JavaScript uses milliseconds; convert the UNIX timestamp(which is in seconds) to milliseconds.
var date = new Date(timestampInMilliSeconds); //create the date object
Step 2: Converting to the Given Format
第 2 步：转换为给定格式
Option #1 - Using native JavaScript Date Methods
选项 #1 - 使用原生 JavaScript 日期方法
var day = (date.getDate() < 10 ? '0' : '') + date.getDate(); //adding leading 0 if date less than 10 for the required dd format
var month = (date.getMonth() < 9 ? '0' : '') + (date.getMonth() + 1); //adding leading 0 if month less than 10 for mm format. Used less than 9 because javascriptmonths are 0 based.
var year = date.getFullYear(); //full year in yyyy format
var hours = ((date.getHours() % 12 || 12) < 10 ? '0' : '') + (date.getHours() % 12 || 12); //converting 24h to 12h and using 12 instead of 0. also appending 0 if hour less than 10 for the required hh format
var minutes = (date.getMinutes() < 10 ? '0' : '') + date.getMinutes(); //adding 0 if minute less than 10 for the required mm format
var meridiem = (date.getHours() >= 12) ? 'pm' : 'am'; //setting meridiem if hours24 greater than 12
var formattedDate = day + '-' + month + '-' + year + ' at ' + hours + ':' + minutes + ' ' + meridiem;
Note:The date shown will be based on the client timezone. If you need UTC based time; use getUTCDate(), getUTCMonth(), getUTCFullYear(), getUTCHours(), getUTCMinutes()and getUTCHours()methods of the JavaScript Date Object instead of the provided.
注意：显示的日期将基于客户端时区。如果您需要基于 UTC 的时间；使用JavaScript 日期对象的getUTCDate()、getUTCMonth()、getUTCFullYear()、getUTCHours()、getUTCMinutes()和getUTCHours()方法而不是提供的方法。
Option #2 - Using date.format jQuery Library
选项 #2 - 使用 date.format jQuery 库
Download date.format.js
https://raw.githubusercontent.com/jacwright/date.format/master/date.format.js
Include date.format.js in your HTML file
<script src="/script dir/date.format.js"></script> //substitute "script dir" with the directory where date.format.js resideFormat the date object
You can use the format string in a similar fashion as in PHP
var formattedDate = date.format('d-m-Y \\a\\t h:i a');
下载 date.format.js
https://raw.githubusercontent.com/jacwright/date.format/master/date.format.js
在 HTML 文件中包含 date.format.js
<script src="/script dir/date.format.js"></script> //substitute "script dir" with the directory where date.format.js reside格式化日期对象
您可以像在 PHP 中一样使用格式字符串
var formattedDate = date.format('d-m-Y \\a\\t h:i a');
Examples
例子
Option #1
选项1
var unixTimeStamp = 983112343;
var timestampInMilliSeconds = unixTimeStamp*1000;
var date = new Date(timestampInMilliSeconds);
var day = (date.getDate() < 10 ? '0' : '') + date.getDate();
var month = (date.getMonth() < 9 ? '0' : '') + (date.getMonth() + 1);
var year = date.getFullYear();
var hours = ((date.getHours() % 12 || 12) < 10 ? '0' : '') + (date.getHours() % 12 || 12);
var minutes = (date.getMinutes() < 10 ? '0' : '') + date.getMinutes();
var meridiem = (date.getHours() >= 12) ? 'pm' : 'am';
var formattedDate = day + '-' + month + '-' + year + ' at ' + hours + ':' + minutes + ' ' + meridiem;
alert(formattedDate);Option #2
选项#2
var unixTimeStamp = 983112343;
var timestampInMilliSeconds = unixTimeStamp*1000;
var date = new Date(timestampInMilliSeconds);
var formattedDate = date.format('d-m-Y \a\t h:i a');
alert(formattedDate);<script src="https://raw.githubusercontent.com/jacwright/date.format/master/date.format.js"></script>Note:There are other libraries like moment.js which too does the stuff similarly.
注意：还有其他库，比如 moment.js，它们也有类似的功能。
