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I nee to add "0" before minutes <10 in Typescript

I need to display the time and the minutes are not working correctly. It is returning 12:4, 2:3..when the minutes are less than 10 there is not 0. I tried adding the "0" like this:
var formattedTime = new Date(time + 'z');
var hours = formattedTime.getHours();
var amOrPm = hours >= 12 ? 'PM' : 'AM';
hours = (hours % 12) || 12;
var minutes = formattedTime.getMinutes();
if (minutes < 10) {
("0" + minutes)
};
var finalTime = eventDate +" "+ hours + ":" + minutes + " " + amOrPm;
Any help is welcome(I am new to coding). Thank You.

The statement ("0" + minutes) doesn't do anything. It does add a '0' to minutes, but you're not doing anything with the result. The problem is that you need to set the result of this statement in a new variable.
But here's an easier way to do this:
const minutes = 5;
const minuteStr = minutes.toString().padStart(2, '0');

How to set Am and Pm for Clock [duplicate]

I have buttons with the names of big cities.
Clicking them, I want to get local time in them.
$('#btnToronto').click(function () {
var hours = new Date().getHours();
var hours = hours-2; //this is the distance from my local time
alert ('Toronto time: ' + hours + ' h'); //this works correctly
});
But how can I get AM or PM ?

You should just be able to check if hours is greater than 12.
var ampm = (hours >= 12) ? "PM" : "AM";
But have you considered the case where the hour is less than 2 before you subtract 2? You'd end up with a negative number for your hour.

Try below code:
$('#btnToronto').click(function () {
var hours = new Date().getHours();
var hours = (hours+24-2)%24;
var mid='am';
if(hours==0){ //At 00 hours we need to show 12 am
hours=12;
}
else if(hours>12)
{
hours=hours%12;
mid='pm';
}
alert ('Toronto time: ' + hours + mid);
});

You can use like this,
var dt = new Date();
var h = dt.getHours(), m = dt.getMinutes();
var _time = (h > 12) ? (h-12 + ':' + m +' PM') : (h + ':' + m +' AM');
Hopes this will be better with minutes too.

const now = new Date()
.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit', hour12: true })
.toLowerCase();
Basically you just need to put {hour12: true} and it's done.
result => now = "21:00 pm";

If hours is less than 12, it's the a.m..
var hours = new Date().getHours(), // this is local hours, may want getUTCHours()
am;
// adjust for timezone
hours = (hours + 24 - 2) % 24;
// get am/pm
am = hours < 12 ? 'a.m.' : 'p.m.';
// convert to 12-hour style
hours = (hours % 12) || 12;
Now, for me as you didn't use getUTCHours, it is currently 2 hours after
hours + ' ' + am; // "6 p.m."

very interesting post. in a function that take a date in parameter it can appear like that :
function hourwithAMPM(dateInput) {
var d = new Date(dateInput);
var ampm = (d.getHours() >= 12) ? "PM" : "AM";
var hours = (d.getHours() >= 12) ? d.getHours()-12 : d.getHours();
return hours+' : '+d.getMinutes()+' '+ampm;
}

with date.js
<script type="text/javascript" src="http://www.datejs.com/build/date.js"></script>
you can write like this
new Date().toString("hh:mm tt")
cheet sheet is here format specifiers
tt is for AM/PM

Try this:
h = h > 12 ? h-12 +'PM' : h +'AM';

The best way without extensions and complex coding:
date.toLocaleString([], { hour12: true});
How do you display javascript datetime in 12 hour AM/PM format?

here is get time i use in my code
let current = new Date();
let cDate = current.getDate() + '-' + (current.getMonth() + 1) + '-' + current.getFullYear();
let hours = current.getHours();
let am_pm = (hours >= 12) ? "PM" : "AM";
if(hours >= 12){
hours -=12;
}
let cTime = hours + ":" + current.getMinutes() + ":" + current.getSeconds() +" "+ am_pm;
let dateTime = cDate + ' ' + cTime;
console.log(dateTime); // 1-3-2021 2:28:14 PM

var now = new Date();
var hours = now.getHours();
var minutes = now.getMinutes();
var ampm = hours >= 12 ? 'pm' : 'am';
hours = hours % 12;
hours = hours ? hours : 12;
minutes = minutes < 10 ? '0' + minutes : minutes;
var timewithampm = hours + ':' + minutes + ' ' + ampm;
return timewithampm;

var dt = new Date();
var h = dt.getHours(),
m = dt.getMinutes();
var time;
if (h == 12) {
time = h + ":" + m + " PM";
} else {
time = h > 12 ? h - 12 + ":" + m + " PM" : h + ":" + m + " AM";
}
//var time = h > 12 ? h - 12 + ":" + m + " PM" : h + ":" + m + " AM";
console.log(`CURRENT TIME IS ${time}`);
This will work for everytime,

function Timer() {
var dt = new Date()
if (dt.getHours() >= 12){
ampm = "PM";
} else {
ampm = "AM";
}
if (dt.getHours() < 10) {
hour = "0" + dt.getHours();
} else {
hour = dt.getHours();
}
if (dt.getMinutes() < 10) {
minute = "0" + dt.getMinutes();
} else {
minute = dt.getMinutes();
}
if (dt.getSeconds() < 10) {
second = "0" + dt.getSeconds();
} else {
second = dt.getSeconds();
}
if (dt.getHours() > 12) {
hour = dt.getHours() - 12;
} else {
hour = dt.getHours();
}
if (hour < 10) {
hour = "0" + hour;
} else {
hour = hour;
}
document.getElementById('time').innerHTML = hour + ":" + minute + ":" + second + " " + ampm;
setTimeout("Timer()", 1000);
}
Timer()
<div id="time"></div>

convert time to to 12 hour by manipulate string

"2015-06-23 14:00:00"
I tried to format above date time into 12 hour base but stuck in somewhere.
function formatDate(raw_date){
var right = raw_date.substring(10, 0);
var hours = ((right[0].substring(2,0) + 11) % 12 + 1);
var min = raw_date.substring(14,16);
var suffix = right[1] >= 12 ? "PM":"AM";
right[1] = ((right[1] + 11) % 12 + 1) + suffix;
return hours + ':' + min + ' ' + suffix;
}
Can someone help? My desired output is "23/06/2015 02:00 PM"

Try this:
function formatDate(raw_date) {
var right = new Date(raw_date);
var currentHours = right.getHours();
var timeOfDay = (currentHours < 12) ? "AM" : "PM";
if (currentHours > 12) {
currentHours -= 12;
}
return (right.getDate() + '/' + right.getMonth()+ '/' + right.getFullYear() +" "+ currentHours+ ":"+right.getMinutes() + timeOfDay);
}
alert(formatDate("2015-06-23 14:00:00"));
Demo

Solution based on your code:
function formatDate(raw_date){
var year = raw_date.substring(0,4);
var month = raw_date.substring(5,7);
var day = raw_date.substring(8,10);
var right = raw_date.substring(10);
var hours = ((right.substring(0,3))% 12 );
var min = raw_date.substring(14,16);
var suffix = right.substring(0,3) >= 12 ? "PM":"AM";
return day + "/"+month+"/"+year+" "+hours + ':' + min + ' ' + suffix;
}

You should follow a simple flow.
Try to break down the input -> convert them _> and then sum them up:
function formatDate(raw_date){
var right = raw_date.substring(0, 10);
var year=right.substring(0,4);
var month=right.substring(5,7);
var day=right.substring(8,10);
right=day+"/"+month+"/"+year;
var left=raw_date.substring(11, raw_date.length);
var hours = left.substring(0,2);
var suffix = hours >= 12 ? "PM":"AM";
hours=hours-12;
if(hours<10) hours='0'+hours;
var min = left.substring(3,5);
left=hours+":"+min+" "+suffix;
return right + ' ' + left;
}

Format a time string with zero based hours and minutes in javascript

This is what have tried:
partly pseudocode:
var hours = date1.getHours();
var minutes = date2.getMinutes();
if (hours.length == 1)
hours = "0" + hours;
if (minutes.length == 1)
minutes = "0" + minutes;
var time = hours + ':' + minutes;
Is there a smarter way like a formatted string function where I can say:
var minutes = date.getMinutes('mm');
var hours = date.getHours('hh');
so it adds the zeros automatically ?

Here is your code fixed since there is no length on an integer
var hours = date1.getHours();
var minutes = date2.getMinutes();
if (hours<10) hours = "0" + hours;
if (minutes<10) minutes = "0" + minutes;
var time = ""+ hours + ":" + minutes;
You do not need a framework and there is no shorter way to do this
This may be what you mean:
Live demo
function pad(num) {
return ("0"+num).slice(-2)
}
var time = pad(date1.getHours())+":"+pad(date2.getMinutes());

This functionality doesn't exist natively in javascript, you have to either add it yourself (as you have started to do), or, use a package.
moment
Mozilla has an example
Here's a blog post to a date formatting function
Where can I find documentation on formatting a date in JavaScript?
How to format a JavaScript date

Use DateJS and you will be able to use mm and hh to add the preceding zeros :)
https://code.google.com/p/datejs/wiki/FormatSpecifiers

You can add a method to Number prototype
Number.prototype.pad0 = function(length) {
var result = this.toString();
while(result.length<length) result = "0"+result;
return result;
}
Then you can get what you want
var date = new Date();
console.log(date.getMinutes().pad0(2));
console.log(date.getHours().pad0(2));

Yet another way of doing it:
var d = new Date();
var t = [ d.getHours(), d.getMinutes(), d.getSeconds() ];
var s = t.map( function(z){return ('00'+z).slice(-2)} ).join(':');
console.log(s);
Time parts are put into an array. That array goes through map() where the numbers get leading zeros. The resulting array is then joined into a string with the ":" separator.

Convert numbers to strings before you check the lengths:
var hours = String(date1.getHours());
var minutes = String(date2.getMinutes());
if (hours.length == 1)
hours = "0" + hours;
if (minutes.length == 1)
minutes = "0" + minutes;
var time = hours + ':' + minutes;

Javascript: How to turn the time (stored as a fraction) into a readable string?

I have the time stored as a fraction (done so it can be displayed on a graph), e.g. 15.5 is 3.30pm and 23.25 is 11.15pm. I need to turn those numbers into strings in the format HH:MM:SS. Is there a simple way of doing this?

var fraction = 23.5;
var date = new Date(2000, 1, 1); // use any date as base reference
date.setUTCSeconds(fraction * 3600); // add number of seconds in fractional hours
Then use a date formatting script such as this, or Date.js if you're not fond or formatting and padding.
date.format("HH:MM:ss"); // 23:30:00
See an example. I'm using the formatting function from here.

Something like this ?
var fraction = 14.5;
var hours = Math.floor(fraction); // extract the hours (in 24 hour format)
var mins = 60 * (fraction - hours); // calculate the minutes
t = new Date(); // create a date/time object
t.setHours(hours); // set the hours
t.setMinutes(mins); // set the mins
console.log(t.toTimeString()); //show it
or completely manual
var fraction = 14.5;
var hours = Math.floor(fraction);
var mins = 60 * (fraction - hours);
var ampm = ((fraction % 24) < 12) ? 'am' : 'pm';
formatted = ('0' + hours % 12).substr(-2) + ':' + ('0' + mins).substr(-2) + ':00 ' + ampm;
console.log(formatted);
Update
And a version with seconds as well..
var fraction = 14.33;
var hours = Math.floor(fraction);
var allseconds = 3600 * (fraction - hours);
var minutes = Math.floor(allseconds / 60);
var seconds = Math.floor(allseconds % 60);
var ampm = ((fraction % 24) < 12) ? 'am' : 'pm';
formatted = ('0' + hours % 12).substr(-2) + ':' + ('0' + minutes).substr(-2) + ':' + ('0' + seconds).substr(-2) + ' ' + ampm;
console.log(formatted);

Manual function:
var time = function(num) {
if(num < 0 || num >= 24) {throw "Invalid number");}
var x = num > 13 ? num - 12 : num;
var h = Math.floor(x);
var min = x - h;
var ampm = num >= 12 && num < 24 ? "pm" : "am";
return (h + ":" + Math.floor(min * 60) + ampm);
};
Tests:
time(13.40); // 1:24pm
time(11.25); // 11:15pm
time(12.50); // 12:30pm
time(23.50); // 11:30pm
time(0.50); // 0:30am
time(24.00); // error!!