JavaScript: Get time differences in minutes between two dates

JavaScript Datetime: Exercise-44 with Solution

Time Diff in Minutes

Write a JavaScript function to get time differences in minutes between two dates.

Test Data :
dt1 = new Date("October 13, 2014 11:11:00");
dt2 = new Date("October 13, 2014 11:13:00");
console.log(diff_minutes(dt1, dt2));
2

Sample Solution:

JavaScript Code:

// Define a function called diff_minutes that calculates the difference in minutes between two Date objects (dt2 and dt1)
function diff_minutes(dt2, dt1) 
 {
  // Calculate the difference in milliseconds between the two provided dates and convert it to seconds
  var diff =(dt2.getTime() - dt1.getTime()) / 1000;
  // Convert the difference from seconds to minutes
  diff /= 60;
  // Return the absolute value of the rounded difference in minutes
  return Math.abs(Math.round(diff));
 }

// Create a Date object dt1 representing November 2, 2014
dt1 = new Date(2014,10,2);
// Create a Date object dt2 representing November 3, 2014
dt2 = new Date(2014,10,3);
// Output the difference in minutes between dt1 and dt2 using the diff_minutes function
console.log(diff_minutes(dt1, dt2));

Output:

1440

Explanation:

In the exercise above,

• Define a function named "diff_minutes()" that calculates the difference in minutes between two given Date objects ("dt2" and "dt1").
• Inside the diff_minutes function:
• It calculates the difference in milliseconds between the two provided Date objects by subtracting the milliseconds value of 'dt1' from the milliseconds value of 'dt2'.
• This difference is then converted to seconds by dividing it by 1000.
• Next, it converts the difference from seconds to minutes by dividing it by 60.
• Finally, it rounds the resulting value to the nearest integer using "Math.round()" and returns the absolute value of this rounded difference using "Math.abs()".
• After defining the function, the code creates two Date objects:
• dt1 represents November 2, 2014.
• dt2 represents November 3, 2014.
• It then calls the "diff_minutes()" function with 'dt1' and 'dt2' as arguments to calculate the difference in minutes between these two dates.
• Finally, it outputs the calculated difference in minutes between 'dt1' and 'dt2' using console.log().

Flowchart:

Live Demo:

See the Pen JavaScript - Get time differences in minutes between two dates-date-ex-44 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript function that calculates the difference in minutes between two Date objects by subtracting their timestamps.
• Write a JavaScript function that uses Math.floor to return the whole number of minutes between two dates.
• Write a JavaScript function that accepts date strings, converts them to Date objects, and computes the minute difference.
• Write a JavaScript function that adjusts for daylight saving time when calculating minute differences.

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