How to usethe Date Object in Javascript
In this approach, using the Date object, input time is set with a common date. The formatted time is extracted in 24-hour format using toLocaleTimeString.
Syntax:
let formattedTime = date.toLocaleTimeString('en-US', { hour12: false });
Example: In this approach we are using the above-explained approach.
function convertTo24Hour(timeString) {
let date = new Date(`01/01/2022 ${timeString}`);
let formattedTime = date.toLocaleTimeString('en-US',
{ hour12: false });
return formattedTime;
}
let inputTime = '09:15 PM';
let formattedTime = convertTo24Hour(inputTime);
console.log(formattedTime);
Output
21:15:00
JavaScript Program to Convert String to 24-hour Time Format
We are going to learn about the conversion of a string to a 24-hour time format in JavaScript, converting a string to a 24-hour time format involves transforming a time representation from the traditional 12-hour clock (AM/PM) to the 24-hour clock (00:00 to 23:59).
There are several methods that can be used to convert a string to a 24-hour time format in JavaScript, which are listed below:
Table of Content
- Approach 1: Using String Manipulation
- Approach 2: Using Regular Expressions
- Approach 3: Using the Date Object
- Approach 4: Using Moment.js Library
- Approach 5: Using Intl.DateTimeFormat
We will explore all the above methods along with their basic implementation with the help of examples.