w3resource

JavaScript: Get timezone offset in seconds

JavaScript Datetime: Exercise-40 with Solution

Write a JavaScript function to get timezone offset in seconds.

Note : The offset for timezones west of UTC is always negative, and for those east of UTC is always positive.
Test Data :
dt = new Date();
console.log(timezone_offset_in_seconds(dt));
19800

Sample Solution:-

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript function to get timezone offset in seconds</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function timezone_offset_in_seconds(dt) 
{ 
   return -dt.getTimezoneOffset() * 60;
}

dt = new Date(); 
console.log(timezone_offset_in_seconds(dt)); 

dt = new Date(1989, 10, 1); 
console.log(timezone_offset_in_seconds(dt));

Sample Output:

19800
19800

Flowchart:

Flowchart: JavaScript- Get timezone offset in seconds

Live Demo:

See the Pen JavaScript - Get timezone offset in seconds-date-ex-40 by w3resource (@w3resource) on CodePen.


Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript function to get difference to Greenwich time (GMT) in hours.
Next: Write a JavaScript function to add specified years to a date.

What is the difficulty level of this exercise?



JavaScript: Tips of the Day

Converts the given array elements into <li> tags and appends them to the list of the given id.

Example:

const tips_arrayToHtmlList = (arr, listID) =>(el => ((el = document.querySelector('#' + listID)),(el += arr.map(item => '<li>${item}</li>').join(''))))();
console.log(tips_arrayToHtmlList(['item 1', 'item 2'], 'myListID'));

Output:

"null
  • ${item}
  • ${item}
  • "