# 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:

Live Demo:

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

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## 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}"
```