JavaScript: Get seconds with leading zeros

JavaScript Datetime: Exercise-36 with Soutilon

Write a JavaScript function to get seconds with leading zeros (00 through 59).

Test Data:
dt = new Date();
console.log(seconds_with_leading_zeros(dt));
"India Standard Time"

Sample Solution:

JavaScript Code:

// Define a function seconds_with_leading_zeros that takes a Date object dt as input
function seconds_with_leading_zeros(dt) 
{ 
  // Check if the minutes component of the given date (dt.getMinutes()) is less than 10
  // If it is less than 10, concatenate '0' to the minutes, else return an empty string
  return (dt.getMinutes() < 10 ? '0' : '') + dt.getMinutes();
}

// Create a new Date object representing the current date and time
dt = new Date(); 
// Output the minutes component of the current date with leading zeros (if necessary)
console.log(seconds_with_leading_zeros(dt)); 

// Create a new Date object representing November 1, 1989
dt = new Date(1989, 10, 1); 
// Output the minutes component of the date November 1, 1989 with leading zeros (if necessary)
console.log(seconds_with_leading_zeros(dt));

Output:

47
00

Explanation:

In the exercise above,

• The code defines a function named "seconds_with_leading_zeros()" that takes a Date object "dt" as input.
• Inside the seconds_with_leading_zeros function:
• It checks if the minutes component of the given date (dt.getMinutes()) is less than 10.
• If the minutes are less than 10, it concatenates a leading '0' to the minutes to ensure a consistent two-digit format.
• If the minutes are 10 or greater, it returns the minutes as is, without leading zeros.
• After defining the function, the code creates a new Date object "dt" representing the current date and time using 'new Date()'. It then calls the "seconds_with_leading_zeros()" function with this Date object and outputs the result (minutes with leading zeros, if necessary) to the console.
• Next, the code creates another new Date object "dt" representing November 1, 1989, using new Date(1989, 10, 1). It again calls the "seconds_with_leading_zeros()" function with this Date object and outputs the result to the console.

Flowchart:

Live Demo:

See the Pen JavaScript - Get seconds with leading zeros-date-ex-36 by w3resource (@w3resource) on CodePen.

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