🔥 How to Calculate the Number of Days Between Two Dates in JavaScript

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Hey developers! 

Generative AI is making waves in document classification, but it’s your skills that bring the magic to life. And speaking of magic, Astro 5.0 just dropped with game-changing features like Content Layer and Server Islands for building dynamic web experiences.

If you’re stuck in the design process, remember: you’re probably not prototyping enough—time to change that. On the technical side, CSS’s new justify-self: center makes centering block elements feel like a breeze, and evaluating browser support just got easier with a new practical framework.

For the toolset: ant-design-vue is perfect for polished enterprise UIs, ghostfolio helps you manage your finances like a pro, and agentops is making AI agent development smoother than ever. Plus, the official Postgres Docker image and trusty webpack are here to simplify your setups and builds.

Dive in and keep coding!

• Classifying Documents with Generative AI

• Introducing Astro 5.0: Unleash Content Layer & Server Islands for a More Dynamic Web Experience

• You’re Not Creating Enough Prototypes

• A Framework for Evaluating Browser Support

• A new way to center block elements using justify-self: center

More news here →

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Calculate the Number of Days Between Two Dates in JavaScript

This one-liner calculates the number of days between two dates by converting the time difference from milliseconds to days:

const dayDif = (date1, date2) => 
  Math.ceil(Math.abs(date1.getTime() - date2.getTime()) / 86400000);

It works by retrieving the timestamps of the two dates, finding their absolute difference, and dividing by the number of milliseconds in a day (86400000). Math.ceil ensures any partial day is rounded up.

You can use this function to calculate durations for scheduling apps, project deadlines, or analyzing time intervals:

console.log(dayDif(new Date('2023-01-01'), new Date('2023-12-31'))); // 364
console.log(dayDif(new Date('2023-12-31'), new Date('2023-01-01'))); // 364
console.log(dayDif(new Date('2023-01-01'), new Date('2023-01-02'))); // 1

When working with user input, ensure dates are valid before using this function

if (!Number.isNaN(date1.getTime()) && !Number.isNaN(date2.getTime())) {
  console.log(dayDif(date1, date2));
} else {
  console.log('Invalid date(s) provided.');
}

This approach is ideal for calculating durations in scheduling tools, tracking project timelines, or analyzing time-based data efficiently.

More code snippets here →

• ant-design-vue - an enterprise-class UI design system for desktop applications with a set of high-quality Vue components out of the box.

• postgres - docker official image packaging for Postgres.

• agentops - helps developers build, evaluate, and monitor AI agents.

• ghostfolio - an open source wealth management software built with web technology.

• webpack - a Versatile Module Bundler: Transforming and Packaging for the Modern Web.

More code libs here →

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