Convert a Unix timestamp to time in JavaScript

Convert a Unix timestamp to time in JavaScript

I am storing time in a MySQL database as a Unix timestamp and that gets sent to some JavaScript code. How would I get just the time out of it?
For example, in HH/MM/SS format.

Solutions/Answers:

Solution 1:

// Create a new JavaScript Date object based on the timestamp
// multiplied by 1000 so that the argument is in milliseconds, not seconds.
var date = new Date(unix_timestamp*1000);
// Hours part from the timestamp
var hours = date.getHours();
// Minutes part from the timestamp
var minutes = "0" + date.getMinutes();
// Seconds part from the timestamp
var seconds = "0" + date.getSeconds();

// Will display time in 10:30:23 format
var formattedTime = hours + ':' + minutes.substr(-2) + ':' + seconds.substr(-2);

For more information regarding the Date object, please refer to MDN or the ECMAScript 5 specification.

Solution 2:

function timeConverter(UNIX_timestamp){
  var a = new Date(UNIX_timestamp * 1000);
  var months = ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'];
  var year = a.getFullYear();
  var month = months[a.getMonth()];
  var date = a.getDate();
  var hour = a.getHours();
  var min = a.getMinutes();
  var sec = a.getSeconds();
  var time = date + ' ' + month + ' ' + year + ' ' + hour + ':' + min + ':' + sec ;
  return time;
}
console.log(timeConverter(0));

Solution 3:

JavaScript works in milliseconds, so you’ll first have to convert the UNIX timestamp from seconds to milliseconds.

var date = new Date(UNIX_Timestamp * 1000);
// Manipulate JavaScript Date object here...

Solution 4:

I’m partial to Jacob Wright’s Date.format() library, which implements JavaScript date formatting in the style of PHP’s date() function.

new Date(unix_timestamp * 1000).format('h:i:s')

Solution 5:

Here is the shortest one-liner solution to format seconds as hh:mm:ss:

/**
 * Convert seconds to time string (hh:mm:ss).
 *
 * @param Number s
 *
 * @return String
 */
function time(s) {
    return new Date(s * 1e3).toISOString().slice(-13, -5);
}

console.log( time(12345) );  // "03:25:45"

Method Date.prototype.toISOString() returns time in
simplified extended ISO 8601 format, which is always 24 or 27 characters long (i.e. YYYY-MM-DDTHH:mm:ss.sssZ or
±YYYYYY-MM-DDTHH:mm:ss.sssZ respectively). The timezone is always
zero UTC offset.

N.B.: This solution does not require any third-party libraries and is supported in all modern browsers and JavaScript engines.

Solution 6:

Use:

var s = new Date(1504095567183).toLocaleDateString("en-US")
// expected output "8/30/2017"   

and for time:

var s = new Date(1504095567183).toLocaleTimeString("en-US") 
// expected output "3:19:27 PM"`

see Date.prototype.toLocaleDateString()