JavaScript: Get 24-hour format of an hour without leading zeros

JavaScript Datetime: Exercise-34 with Solution

24-Hour Format

Write a JavaScript function to get the 24-hour format of an hour without leading zeros.

Test Data :
dt = new Date(1989, 10, 1);
console.log(hours_without_zeroes(dt));
0

Sample Solution:

JavaScript Code:

// Define a function named 'hours_without_zeroes' that takes a Date object 'dt' as input
function hours_without_zeroes(dt) 
{ 
  // Return the hour component of the given date, without leading zeroes
  return dt.getHours();
}

// Create a new Date object representing the current date and time
dt = new Date(); 
// Print the hour component of the current date, without leading zeroes
console.log(hours_without_zeroes(dt)); 

// Create a new Date object representing a specific date (November 1, 1989)
dt = new Date(1989, 10, 1); 
// Print the hour component of the specific date, without leading zeroes
console.log(hours_without_zeroes(dt));

Output:

15
0

Explanation:

The above JavaScript code defines a function named "hours_without_zeroes()" that takes a "Date" object as input and returns the hour component of the date without leading zeroes. It then creates two "Date" objects - one representing the current date and time, and another representing November 1, 1989. It prints the hour component of each date object using the "hours_without_zeroes()" function, demonstrating how it works.

Flowchart:

Live Demo:

See the Pen JavaScript - Get 24-hour format of an hour without leading zeros-date-ex-34 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript function that extracts the hour from a Date object and returns it in 24-hour format as a number.
• Write a JavaScript function that converts a 12-hour time string with AM/PM into 24-hour time without leading zeros.
• Write a JavaScript function that validates a Date object and outputs its hour in 24-hour format using getHours().
• Write a JavaScript function that processes user input in 12-hour format and returns the equivalent 24-hour number.

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