How to useString Manipulation in Javascript
This approach involves splitting the input string using the delimiter, extracting the hour and minute components, and converting them to a 24-hour format.
Syntax:
const [time, period] = timeString.split(' ');
const [hour, minute] = time.split(':');
let formattedHour = parseInt(hour);
Example: In this example, we are using the above approach.
function convertTo24HourFormat(timeString) {
const [time, period] = timeString.split(' ');
const [hour, minute] = time.split(':');
let formattedHour = parseInt(hour);
if (period === 'PM') {
formattedHour += 12;
}
return `${formattedHour}:${minute}`;
}
const inputTime = '03:30 PM';
const formattedTime = convertTo24HourFormat(inputTime);
console.log(formattedTime);
Output
15:30
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.