Just Learn Code

Time Travel: How to Get Yesterday’s Date and Timestamp in JavaScript

JavaScript is a powerful programming language that is commonly used to create dynamic web content. One of the most basic things that JavaScript programmers need to know is how to get the date and time of the current day.

However, sometimes you may need to manipulate and retrieve dates for a different day, such as yesterday. In this article, we will learn how to get yesterday’s date and timestamp in JavaScript.

1) Getting Yesterday’s Date in JavaScript

The first thing we will discuss is how to get yesterday’s date in JavaScript. This can be useful in different scenarios where we need to keep track of events that happened yesterday or calculate the time elapsed since a particular event occurred.

Thankfully, JavaScript provides an in-built date object that makes it easy to retrieve dates. To get yesterday’s date, we can use the setDate() method of the date object.

This method allows us to set the value of the date in a given month. We first get the current date using the new Date() method, and then use setDate() to subtract one from the current date object.

Finally, we use getDate() to get the numeric value of yesterday’s date. Here is an example code to get yesterday’s date in JavaScript:

“`

const currentDate = new Date()

currentDate.setDate(currentDate.getDate() – 1)

const yesterday = currentDate.getDate()

console.log(yesterday) // Outputs the numeric value of yesterday’s date

“`

In this code, we first create a new date object using the new Date() method.

We then use setDate() to subtract one from the current date. We then call the getDate() method to retrieve the numeric value of yesterday’s date.

Finally, we use console.log() to print the value of yesterday to the console. 2) Getting Yesterday’s Timestamp in JavaScript

Now that we know how to get yesterday’s date, we can also retrieve yesterday’s Unix timestamp.

The Unix timestamp is a way of representing time as a single number that increases with each passing second. This can be useful in storing time-sensitive data or making time-based calculations.

To get yesterday’s Unix timestamp, we can use the Date.prototype.valueOf() method to get the value of the current date object in milliseconds. We then subtract the number of milliseconds in a day from this value to get yesterday’s timestamp.

Finally, we use Math.floor() to round down the timestamp to the nearest whole number. Here is an example code to get yesterday’s timestamp in JavaScript:

“`

const currentDate = new Date()

const yesterdayTimestamp = Math.floor(currentDate.valueOf() – (24 * 60 * 60 * 1000))

console.log(yesterdayTimestamp) // Outputs yesterday’s timestamp as a whole number

“`

In this code, we first create a new date object using the new Date() method.

We then use Date.prototype.valueOf() to get the number of milliseconds since the Unix epoch. We then subtract the number of milliseconds in a day (24 hours) from this value to get yesterday’s timestamp.

Finally, we use Math.floor() to round down the timestamp to the nearest whole number. We then use console.log() to print the value of yesterday’s timestamp to the console.

Conclusion

In this article, we learned how to retrieve yesterday’s date and timestamp in JavaScript. We explored the in-built date object and its methods and used mathematical operations to calculate yesterday’s timestamp.

We hope that this article has been informative and useful in your journey to becoming a better JavaScript programmer. AuthorAs a software engineer and open-source contributor, technology has always been a passion of mine.

With years of experience in software engineering and a keen focus on innovative solutions, I have been fortunate enough to contribute to some of the most exciting projects in the field. In this article, we will delve into my background, interests, and social media presence.

Background and Interests

My interest in technology began at a young age when I received my first computer. Eventually, I started experimenting with programming, which led me to pursue a degree in computer science.

Soon after graduating, I landed my first job as a software engineer at a startup, where I was involved in developing software solutions for various industries. Throughout my career, I have had the privilege of being involved in some exciting projects, including working on the development of a mobile app for a Fortune 500 company.

This project was an incredible opportunity for me to learn from some of the most experienced software engineers in the field, and it helped me develop a deep understanding of mobile app development. As my career progressed, I became increasingly interested in open-source development and began contributing to several projects in my spare time.

The open-source community is an excellent way to get involved with high-quality projects and collaborate with other developers from around the world. I am passionate about using technology to solve real-world problems and create efficient solutions that have a positive impact on people’s lives.

This drive and passion have resulted in a strong foundation for my work, with a focus on innovation, problem-solving, and attention to detail.

Social Media Presence

Apart from my contributions to the world of software engineering, I strive to have a strong social media presence. Twitter is one platform where I share my thoughts and opinions on the latest trends in technology, software engineering, and other exciting topics.

You can find me on Twitter using the handle @rlavarian. On my Twitter account, I share useful information about new innovations in software engineering, tips for aspiring developers, and updates on what I am working on.

In addition to sharing valuable information, Twitter is a great platform for networking and connecting with other professionals in the field. I often connect with other developers and software engineers from around the world to exchange thoughts, share ideas, and motivate one another.

I firmly believe that social media has tremendous potential to drive positive change, improve communication, and foster new relationships. As an open-source contributor and technology enthusiast, I value the opportunity to connect with like-minded people and grow through collaboration.

Conclusion

In conclusion, my passion for technology and software engineering has led to incredible experiences in my career, with opportunities to work on some of the most exciting projects in the field. Through my contributions to open-source projects and a strong social media presence, I have found ways to stay engaged with the latest advancements in technology and connect with other professionals in the field.

As technology continues to evolve and transform the world, it is more important than ever to stay up to date with the latest trends and developments. I am excited to be a part of this ever-changing field and look forward to the future of software engineering and technology.

In this article, we learned how to retrieve yesterday’s date and timestamp in JavaScript. By using the in-built date object and its methods, we were able to leverage mathematical operations to calculate yesterday’s timestamp.

As the world of technology continues to evolve and transform, staying up to date with the latest advancements is increasingly important. By using social media platforms like Twitter, we can connect with like-minded individuals and stay engaged with the latest trends.

As aspiring software engineers, developers, and tech enthusiasts, we must remain committed to innovation, problem-solving, and attention to detail to continue making a positive impact in this field.

Popular Posts