Get current date time in seconds

Question

How do I get the current date time in seconds in Javascript

User · Answer

These JavaScript solutions give you the milliseconds or the seconds since the midnight, January 1st, 1970.

The IE 9+ solution(IE 8 or the older version doesn't support this.):

var timestampInMilliseconds = Date.now();
var timestampInSeconds = Date.now() / 1000; // A float value; not an integer.
    timestampInSeconds = Math.floor(Date.now() / 1000); // Floor it to get the seconds.
    timestampInSeconds = Date.now() / 1000 | 0; // Also you can do floor it like this.
    timestampInSeconds = Math.round(Date.now() / 1000); // Round it to get the seconds.

To get more information about Date.now(): https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/now

The generic solution:

// ‘+’ operator makes the operand numeric.
// And ‘new’ operator can be used without the arguments ‘(……)’.
var timestampInMilliseconds = +new Date;
var timestampInSeconds = +new Date / 1000; // A float value; not an intger.
    timestampInSeconds = Math.floor(+new Date / 1000); // Floor it to get the seconds.
    timestampInSeconds = +new Date / 1000 | 0; // Also you can do floor it like this.
    timestampInSeconds = Math.round(+new Date / 1000); // Round it to get the seconds.

Be careful to use, if you don't want something like this case.

if(1000000 < Math.round(1000000.2)) // false.

User · Answer

Based on your comment  I think you re looking for something like this   var timeout   new Date   getTime     15 60 1000    add 15 minutes    Then in your check  you re checking   if new Date   getTime    gt  timeout      alert  Session has expired

User · Answer

var seconds   new Date   getTime     1000        will give you the seconds since midnight  1 Jan 1970  Reference

User · Answer

Date now  -Math floor Date now   1000 60 60 24  24 60 60 1000   This should give you the milliseconds from the beginning of the day    Date now  -Math floor Date now   1000 60 60 24  24 60 60 1000  1000   This should give you seconds    Date now  - Date now   1000 60 60 24 0  24 60 60 1000  1000   Same as previous except uses a bitwise operator to floor the amount of days

User · Answer

I use this  Math round Date now     1000   No need for new object creation  see doc Date now

User · Answer

You can met another way to get time in seconds milliseconds since 1 Jan 1970   var milliseconds    new Date          var seconds   milliseconds   1000    But be careful with such approach  cause it might be tricky to read and understand it

User · Answer

To get today s total seconds of the day  getTodaysTotalSeconds        let date   new Date                return   date getHours     60   60     date getMinutes     60    date getSeconds       I have add   in return which return in int  This may help to other developers

User · Answer

To get the number of seconds from the Javascript epoch use   date   new Date    milliseconds   date getTime    seconds   milliseconds   1000

User · Answer

On some day in 2020  inside Chrome 80 0 3987 132  this gives 1584533105     new Date   1000     1584533105 Number isInteger    new Date   1000      true

User · Answer

Better short cuts    new Date   Milliseconds since Linux epoch  new Date   1000   Seconds since Linux epoch Math round  new Date   1000   Seconds without decimals since Linux epoch

User · Answer

Using new Date   getTime     1000 is an incomplete solution for obtaining the seconds  because it produces timestamps with floating-point units   const timestamp   new Date     1000     1405792936 933    Technically   933 would be milliseconds     A better solution would be      Rounds the value const timestamp   Math round new Date     1000      1405792937     - OR -     Floors the value const timestamp   new Date     1000   0     1405792936   Values without floats are also safer for conditional statements  as the float may produce unwanted results  The granularity you obtain with a float may be more than needed   if  1405792936 993  lt  1405792937     true

User · Answer

Date now     gives milliseconds since epoch  No need to use new    Check out the reference here  https   developer mozilla org en-US docs Web JavaScript Reference Global Objects Date now   Not supported in IE8

User · Answer

x000D   x000D     The Current Unix Timestamp x000D     1443535752 seconds since Jan 01 1970   UTC  x000D   x000D     Current time in seconds x000D  console log Math floor new Date   valueOf     1000        1443535752 x000D  console log Math floor Date now     1000                  1443535752 x000D  console log Math floor new Date   getTime     1000        1443535752 x000D   lt script src  https   ajax googleapis com ajax libs jquery 2 1 1 jquery min js  gt  lt  script gt  x000D   x000D   x000D    jQuery   x000D   x000D  console log Math floor   now     1000                     1443535752 x000D   lt script src  https   ajax googleapis com ajax libs jquery 2 1 1 jquery min js  gt  lt  script gt  x000D   x000D   x000D

[javascript] Get current date/time in seconds

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