Скачать или смотреть How to Get the Next Monday Date and Time in JavaScript

Learn how to calculate the `next Monday` date and the time difference from the current date in JavaScript, with easy-to-follow code examples.
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This video is based on the question https://stackoverflow.com/q/63633493/ asked by the user 'kiwel81208' ( https://stackoverflow.com/u/14144021/ ) and on the answer https://stackoverflow.com/a/63633904/ provided by the user 'Daniil Emelin' ( https://stackoverflow.com/u/14092157/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Calculate the Date of Next Monday in JavaScript

Have you ever found yourself needing to calculate the date of the next specific day of the week in JavaScript? Perhaps you're working on a scheduling application, and you want to determine when the next Monday will be, along with the exact time of 5:30 PM. In this guide, we will tackle this problem step-by-step, providing you with a clear understanding and practical code examples.

Understanding the Problem

Let's say you want to determine the date for the next Monday from a given date and time. For instance, if today is August 28, 2020 at 17:35, you would like the program to return August 31, 2020 at 17:30 and also provide the difference between the current date and this future date.

Breakdown of the Requirements

To achieve this, we need to:

Calculate the next occurrence of Monday and set the time to 5:30 PM.

Calculate the difference in time between the current date and the target date (next Monday).

The Solution

To solve this, we will create a function that takes a day index (0 for Sunday, 1 for Monday, and so on) and calculates the date of that day in the next week. We will also write a separate function to calculate the time left until this date.

Step 1: Getting the Next Day

We'll start by creating a function called getNextDay. This function will take a day index and return the date of the next occurrence of that day.

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Calculating the Time Left

Next, we'll implement a function called getTimeleft that calculates the difference between the current date and the future date we get from the previous function.

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Putting It All Together

Finally, we will call these functions together to get the desired output.

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

With the above code snippets, you can successfully calculate the date for the next Monday and the time left until that moment. This handy little tool can be a game-changer for any situation where you need to work with specific days of the week in JavaScript.

Feel free to modify the getNextDay function for other days by changing the index (0 for Sunday, 2 for Tuesday, etc.). Happy coding!