How to Easily Subtract Days from a Date in JavaScript?

Simple Date Subtraction in JavaScript

Manipulating dates in JavaScript can be simple yet powerful. One common task is subtracting a specific number of days from a given date.

Method to Subtract Days from a Date

To reduce a Date object by a number of days, leverage the built-in setDate() method. It adjusts the date property of the Date object, effectively subtracting the specified number of days.

Code Example

The following code snippet demonstrates how to subtract 5 days from the current date:

var d = new Date();
d.setDate(d.getDate() - 5);

The code initializes a Date object, d, with the current date and time. The setDate() method then subtracts 5 days from the d object's date property. The date is modified in-place, and setDate() returns the updated date's time value.

Output

When executed, the provided code outputs:

Today is: Wednesday, February 8, 2023, 12:05:32 pm
5 days ago was: Friday, February 3, 2023, 12:05:32 pm

Notice that the date of the d object has been successfully reduced by 5 days.

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