Why isn't my IF statement applying to time?

Question

I would like to get it to display 0 infront of the output if it's under 10.

const time = new Date();
let hour = today.getHours();
let minute = today.getMinutes();
let second = today.getSeconds();
if (second < 10) {
  second = 0 + second;
}

console.log(`Time is ${hour} : ${minute} : ${second}`);

Instead of showing for example 19:5:7, I would like to see 19:05:07

/// Ok, I found out what the problem was. 0 was a number not a string. Just started with JS.
Thanks for the help!

Because `0 + second` is still `second`, since both are numbers. — Federico klez Culloca, Jun 13 '19 at 15:17
When adding 0 + second you are adding two integers together. To add a 0 in front of the number you need to convert the expression to a string. To do this, you can simply add a string to the line such as `second = '' + 0 + second` or just do as j08691 suggested and do `second = '0' + second`. — kojow7, Jun 13 '19 at 15:29

score 2 · Answer 1 · answered Jun 13 '19 at 15:19

2

You could pad the value with leading zeroes.

const pad2 = s => s.toString().padStart(2, '0');

let today = new Date;
let hour = pad2(today.getHours());
let minute = pad2(today.getMinutes());
let second = pad2(today.getSeconds());

console.log(`Time is ${hour}:${minute}:${second}`);

answered Jun 13 '19 at 15:19

Nina Scholz

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For the OP, the first line is using an ES6 arrow function. – kojow7 Jun 13 '19 at 15:34

Why isn't my IF statement applying to time?

1 Answers1