Convert Time To 24 Hours Format In Javascript Closed

When working with time values in your JavaScript project, you may come across the need to convert time into a 24-hour format. This conversion can be a simple yet essential task, especially when dealing with time-sensitive applications. In this article, we'll walk you through how to easily convert time to the 24-hour format in JavaScript.

To begin with, let's consider a scenario where you have a time value in a 12-hour format, for example, '3:45 PM', and you want to convert it to 24-hour format. The first step is to split the given time into hours and minutes. To achieve this, we can use the .split() method in JavaScript.

const time12Hour = '3:45 PM';
const [time, modifier] = time12Hour.split(' ');
const [hours, minutes] = time.split(':');

In the code snippet above, we first split the time value into 'time' and 'modifier' parts based on the space (' ') delimiter. The 'time' variable will hold the time in 12-hour format, while the 'modifier' variable will indicate whether it is AM or PM. Next, we split the 'time' further into 'hours' and 'minutes' based on the colon (':') delimiter.

The next step involves converting the 12-hour format to 24-hour format. We need to consider both AM and PM cases. Here is how you can achieve the conversion:

let hours24 = (parseInt(hours) % 12) + (modifier === 'PM' ? 12 : 0);
hours24 = hours24.toString().padStart(2, '0');
const time24Hour = `${hours24}:${minutes}`;

In the code snippet above, we use the modulo operator (%) to handle the conversion of hours from 12-hour format to 24-hour format. If the modifier is 'PM', we add 12 to the hours value to convert it properly. We then use the padStart() method to ensure that the hours value is formatted with leading zeros if needed. Finally, we concatenate the hours and minutes back together to get the time in 24-hour format.

Now, you have successfully converted the time from 12-hour format to 24-hour format in JavaScript. You can test this conversion method with different time values and modifiers to ensure its accuracy and reliability in your projects.

In conclusion, knowing how to convert time to the 24-hour format in JavaScript can be a useful skill when working on tasks that involve time calculations or displays. By following the steps outlined in this article and understanding the conversion process, you can efficiently handle time-related operations in your JavaScript applications.