Utilize the function with another function (difficult to articulate)

Apologies in advance for my beginner question.

Review the code snippet below:

var dt = new Date(t*1000);
var m = "0" + dt.getMinutes();

Depending on the t variable (unix time), the output can be one of the following:

m = 054 // 54 minutes
m = 03 // 3 minutes

The formatting breaks when there are too many minutes. To solve this, we need to extract only the last two characters by using:

var m = "0" + dt.getMinutes();
m = m.substr(-2);

Resulting in:

m = 54 // 54 minutes
m = 3  // 03 minutes

Problem solved, right? However, repeating the variable assignment seems inefficient. I attempted:

var m = "0" + dt.getMinutes().substr(-2);

But encountered this error:

TypeError: dt.getMinutes(...).substr is not a function

Is there a more concise way to achieve this?

javascript

Answer №1

Date Manipulation Guide explains that Date.getMinutes returns an integer, not a string. Therefore, attempting to use substr on it will result in an error. However, wrapping the "0" + dt.getMinutes() expression in parentheses converts it to a string, allowing you to successfully call substr:

var dt = new Date();
var m = ("0" + dt.getMinutes()).substr(-2);
console.log(m);

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