JavaScript: Add minutes to a Date object

JavaScript Datetime: Exercise-6 with Solution

Add Minutes to Date

Write a JavaScript function to add specified minutes to a Date object.

Test Data:
console.log(add_minutes(new Date(2014,10,2), 30).toString());
Output :
"Sun Nov 02 2014 00:30:00 GMT+0530 (India Standard Time)"

Sample Solution:

JavaScript Code:

// Define a JavaScript function called add_minutes with parameters dt and minutes
var add_minutes =  function (dt, minutes) {
    // Create a new Date object representing the result of adding the specified number of minutes to the provided date
    return new Date(dt.getTime() + minutes*60000);
}
// Output the result of adding 30 minutes to the date "2014-11-02"
console.log(add_minutes(new Date(2014,10,2), 30).toString());

Output:

Sun Nov 02 2014 00:30:00 GMT+0530 (India Standard Time)

Explanation:

In the exercise above -

• The code defines a JavaScript function named "add_minutes(()" with two parameters: 'dt' representing a date object and 'minutes' representing the number of minutes to add to the date.
• Inside the function:
• It creates a new Date object representing the result of adding the specified number of minutes (minutes) to the provided date (dt).
• It achieves this by utilizing the "getTime()" method of the Date object, which returns the number of milliseconds since the Unix epoch (January 1, 1970 00:00:00 UTC) for the given date, and then adding the number of milliseconds corresponding to the specified minutes.
• The function returns the resulting date as a new Date object.
• The code then demonstrates the "add_minutes()" function by calling it with a specific date (November 2, 2014) and adding 30 minutes to it.

Flowchart:

Live Demo:

See the Pen JavaScript - Add minutes to a Date object-date-ex- 6 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript function that adds a specified number of minutes to a given Date object using setMinutes().
• Write a JavaScript function that converts minutes to milliseconds and adds them to a Date object’s timestamp.
• Write a JavaScript function that validates the minutes parameter to ensure it is a number before addition.
• Write a JavaScript function that returns the updated Date object in a formatted string after adding minutes.

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