JavaScript: Add specified weeks to a date

Last update on August 19 2022 21:50:49 (UTC/GMT +8 hours)

JavaScript Datetime: Exercise-42 with Solution

Write a JavaScript function to add specified weeks to a date.

Test Data :
dt = new Date(2014,10,2);
console.log(add_weeks(dt, 10).toString());
Output :
"Sun Jan 11 2015 00:00:00 GMT+0530 (India Standard Time)"

Sample Solution:-

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript function to add specified weeks to a date</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function add_weeks(dt, n) 
 {
 return new Date(dt.setDate(dt.getDate() + (n * 7)));      
 }

dt = new Date();
console.log(add_weeks(dt, 10).toString());  

dt = new Date(2014,10,2);
console.log(add_weeks(dt, 10).toString());

Sample Output:

Wed Aug 29 2018 16:56:47 GMT+0530 (India Standard Time)
Sun Jan 11 2015 00:00:00 GMT+0530 (India Standard Time)

Flowchart:

Live Demo:

See the Pen JavaScript - Add specified weeks to a date-date-ex-42 by w3resource (@w3resource) on CodePen.

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