JavaScript: Get the day of the month, 2 digits with leading zeros

JavaScript Datetime: Exercise-19 with Solution

Day of Month (2 Digits)

Write a JavaScript function to get the day of the month, 2 digits with leading zeros.

Test Data :
d= new Date(2015, 10, 1);
console.log(day_of_the_month(d));
19
01

Sample Solution:

JavaScript Code:

// Define a JavaScript function called day_of_the_month with parameter d (date)
function day_of_the_month(d)
{ 
  // Return the day of the month as a string
  // If the day is less than 10, prepend '0' to the day to ensure two-digit formatting
  return (d.getDate() < 10 ? '0' : '') + d.getDate();
}

// Create a new Date object representing the current date
d= new Date();
// Output the day of the month for the current date
console.log(day_of_the_month(d));

// Create a new Date object representing November 1, 2015
d= new Date(2015, 10, 1);
// Output the day of the month for November 1, 2015
console.log(day_of_the_month(d));

Output:

19
01

Explanation:

In the exercise above,

• The code defines a JavaScript function named "day_of_the_month()" with one parameter 'd', which represents a Date object.
• Inside the function:
• It extracts the day of the month from the provided Date object using the "getDate()" method.
• It checks if the extracted day is less than 10.
• If the day is less than 10, it prepends '0' to the day to ensure two-digit formatting.
• It returns the day of the month as a string.
• The code then demonstrates the usage of the "day_of_the_month()" function:
• It creates a new Date object representing the current date (new Date()).
• It outputs the day of the month for the current date using console.log().
• It creates a new Date object representing November 1, 2015 (new Date(2015, 10, 1)).
• It outputs the day of the month for November 1, 2015 using console.log().

Flowchart:

Live Demo:

See the Pen JavaScript - Get the day of the month, 2 digits with leading zeros-date-ex-19 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript function that returns the day of the month as a two-digit string, adding a leading zero if necessary.
• Write a JavaScript function that extracts the day from a Date object and formats it using padStart().
• Write a JavaScript function that converts the day number to a string and ensures it is always two digits.
• Write a JavaScript function that validates a Date object before returning its day in "DD" format.

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