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show time in HH:MM only in this javascript code [duplicate]

This question already has answers here:
Current time formatting with Javascript
(16 answers)
Closed 8 years ago.
The following JS shows the time in HH:MM:SS format while I need it to show HH:MM only
setInterval(function() {
var d = new Date();
var t = d.getTime();
var interval = 5*60*1000;
var last = t - t % interval;
var next = last + interval + 10*60000;
d.setTime(next);
var time = d.toLocaleTimeString();
$(".clock").html(time);
}, 1000);
Any idea on how to achieve that?
Fiddle: http://jsfiddle.net/7z9boag8/

There's getHours() and getMinuets() methods available.
example:
http://jsfiddle.net/0todu2y7/
jQuery(function($) {
setInterval(function() {
var d = new Date();
var t = d.getTime();
var interval = 5*60*1000;
var last = t - t % interval;
var nextt = last + interval + 5*60000;
d.setTime(nextt);
var hours = d.getHours();
var min = d.getMinutes();
$(".clock").html(hours+":"+min);
}, 1000);
});

i am sorry . i m not edit your code . i just give you another procedure
String.prototype.toHHMMSS = function () {
var sec_num = parseInt(this, 10); // don't forget the second param
var hours = Math.floor(sec_num / 3600);
var minutes = Math.floor((sec_num - (hours * 3600)) / 60);
var seconds = sec_num - (hours * 3600) - (minutes * 60);
if (hours < 10) {hours = "0"+hours;}
if (minutes < 10) {minutes = "0"+minutes;}
if (seconds < 10) {seconds = "0"+seconds;}
var time = hours+':'+minutes+':'+seconds;
return time;
}
Second Formula is
function checkTime(i) {
if (i < 10) {
i = "0" + i;
}
return i;
}
function yourTime() {
var today = new Date();
var h = today.getHours();
var m = today.getMinutes();
var s = today.getSeconds();
// add a zero in front of numbers<10
m = checkTime(m);
s = checkTime(s);
document.getElementById('time').innerHTML = h + ":" + m + ":" + s;
t = setTimeout(function () {
startTime()
}, 500);
}
yourTime();

Try this:
var time = d.toLocaleTimeString().match(/(\d+:\d+):\d+( \w{2})*/);
var time = time[1] + (time[2] ? time[2] : "");

setInterval(function() {
var d = new Date();
var t = d.getTime();
var interval = 5*60*1000;
var last = t - t % interval;
var next = last + interval + 10*60000;
d.setTime(next);
var time = d.toLocaleTimeString().split(':')
time.pop()
time.join(':')
$(".clock").html(time);
}, 60000);
I don't think that u shuold run tins function every second. U may do it once in minute.

jQuery live clock works but freezes browser?

So I made a little script for a clock, and used setInterval to make it live.
It works fine, but the problem is it freezes my browser after a minute or so. I'm a little stuck as I don't know how to solve this. Can someone help please?
Here is the code:
$(function liveClock(){
var dt = new Date();
var hh = dt.getHours();
var mm = dt.getMinutes();
var ss = dt.getSeconds();
var ampm = "";
if (ss <= 9){ ss = "0"+dt.getSeconds() }
if (mm <= 9){ mm = "0"+dt.getMinutes() }
if (hh > 12){
hh = hh - 12;
ampm = "pm";
}else{
ampm = "am";
}
$("p").html( hh + ":" + mm + ":" + ss + " " + ampm );
setInterval(function(){
liveClock();
}, 1000);
});
Thanks in advance

Every time liveClock runs, it starts an interval running.
You run it manually. You have an interval running that runs it every second.
After 1 second, it gets called again. You now have two intervals calling it every second.
After 2 seconds, it gets called again twice. You now have 4 intervals calling it every second.
3 seconds. 8 intervals.
4 seconds. 16 intervals.
etc.
Replace $() with setInterval
Remove setInterval from inside the function

I think it's because your setting setInterval every time the function is run, and so after a minute you have 60 timers going.
You can make it work correctly by only setting setInterval once like so:
function liveClock(){
var dt = new Date();
var hh = dt.getHours();
var mm = dt.getMinutes();
var ss = dt.getSeconds();
var ampm = "";
if (ss <= 9){ ss = "0"+dt.getSeconds() }
if (mm <= 9){ mm = "0"+dt.getMinutes() }
if (hh > 12){
hh = hh - 12;
ampm = "pm";
}else{
ampm = "am";
}
$("p").html( hh + ":" + mm + ":" + ss + " " + ampm );
}
$(function() {
setInterval(function(){
liveClock();
}, 1000);
});
JSFiddle here: http://jsfiddle.net/76328/
Or try exchanging it for setTimeout() instead which will only happen once.

Try this:
<!DOCTYPE html>
<html>
<head>
<title></title>
<script src="Scripts/jquery-1.4.1.min.js"></script>
<script>
function liveClock() {
var today = new Date();
var h = today.getHours();
var m = today.getMinutes();
var s = today.getSeconds();
m = checkTime(m);
s = checkTime(s);
$("p").html(h + ":" + m + ":" + s);
var t = setTimeout(function () { liveClock() }, 500);
}
function checkTime(i) {
if (i < 10) { i = "0" + i }; // add zero in front of numbers < 10
return i;
}
</script>
</head>
<p></p>
Fiddle here
This code doesn't freezes browser and I've checked it and it works perfectly. Hope to get vote up for the code.

Javascript timer just for minutes and seconds

I found a JSFiddle with a timer that counts up every second.
Except i want this to work with just the minutes and seconds. No hours.
Any ideas?

DATE_OBJ.getSeconds() to get seconds of Date object.
DATE_OBJ. getMinutes() to get minutes of Date object.
setInterval to invoke handler function after every second(1000ms).
var handler = function() {
var date = new Date();
var sec = date.getSeconds();
var min = date.getMinutes();
document.getElementById("time").textContent = (min < 10 ? "0" + min : min) + ":" + (sec < 10 ? "0" + sec : sec);
};
setInterval(handler, 1000);
handler();
<h1 id="time" style="text-align: center"></h1>

Here's a very hackish approach - http://jsfiddle.net/gPrwW/1/
HTML -
<div id="worked">31:14</div>
JS :
$(document).ready(function (e) {
var $worked = $("#worked");
function update() {
var myTime = $worked.html();
var ss = myTime.split(":");
var dt = new Date();
dt.setHours(0);
dt.setMinutes(ss[0]);
dt.setSeconds(ss[1]);
var dt2 = new Date(dt.valueOf() + 1000);
var temp = dt2.toTimeString().split(" ");
var ts = temp[0].split(":");
$worked.html(ts[1]+":"+ts[2]);
setTimeout(update, 1000);
}
setTimeout(update, 1000);
});

The precise way of handling this is the following:
store the time of the start of the script
in a function that gets called repeatedly get the time elapsed
convert the elapsed time in whatever format you want and show it
Sample code:
var initialTime = Date.now();
function checkTime(){
var timeDifference = Date.now() - initialTime;
var formatted = convertTime(timeDifference);
document.getElementById('time').innerHTML = '' + formatted;
}
function convertTime(miliseconds) {
var totalSeconds = Math.floor(miliseconds/1000);
var minutes = Math.floor(totalSeconds/60);
var seconds = totalSeconds - minutes * 60;
return minutes + ':' + seconds;
}
window.setInterval(checkTime, 100);
You can easily change the granularity of checking the time (currently set at 0.1 seconds). This timer has the advantage that it will never be out of sync when it updates.

You can make a function that increments a counter every time it's called, shows the value as:
counter/60 minutes, counter%60 seconds
Then you can use the setInterval function to make JavaScript call your code every second. It's not extremely precise, but it's good enough for simple timers.

var initialTime = Date.now();
function checkTime(){
var timeDifference = Date.now() - initialTime;
var formatted = convertTime(timeDifference);
document.getElementById('time').innerHTML = '' + formatted;
}
function convertTime(miliseconds) {
var totalSeconds = Math.floor(miliseconds/1000);
var minutes = Math.floor(totalSeconds/60);
var seconds = totalSeconds - minutes * 60;
return minutes + ':' + seconds;
}
window.setInterval(checkTime, 100);

This might be something?
plain count up timer in javascript
It is based on the setInterval method
setInterval(setTime, 1000);

How to convert JavaScript functions to jQuery for a countdown timer on load of a page

I have the following code for a countdown timer. I need to convert the JavaScript portion to jQuery. The countdown timer starts on page load. How can I do that, as I have to load the diffTime function on load of the page. Please help me. Thanks in advance.
Edit: I got that the jquery call can not access ** function Tick() ** from ** function CreateTimer() ** . Is there any library for ** setTimeout() ** in jQuery? As I know so far, it is native to JS.
<html>
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script>
<script type="text/javascript">
var Timer;
var TotalSeconds;
function CreateTimer(TimerID, Time) {
Timer = document.getElementById(TimerID);
TotalSeconds = Time;
//UpdateTimer()
window.setTimeout("Tick()", 1000);
}
function Tick() {
if (TotalSeconds <= 0) {
//alert("Time's up!")
document.getElementById("timeMsg").innerHTML = "Market closed!! ";
return;
}
TotalSeconds -= 1;
UpdateTimer()
window.setTimeout("Tick()", 1000);
}
function UpdateTimer() {
var Seconds = TotalSeconds;
var Days = Math.floor(Seconds / 86400);
Seconds -= Days * 86400;
var Hours = Math.floor(Seconds / 3600);
Seconds -= Hours * (3600);
var Minutes = Math.floor(Seconds / 60);
Seconds -= Minutes * (60);
var TimeStr = ((Days > 0) ? Days + " days " : "") + LeadingZero(Hours) + ":" + LeadingZero(Minutes) + ":" + LeadingZero(Seconds)
Timer.innerHTML = TimeStr;
}
function LeadingZero(Time) {
return (Time < 10) ? "0" + Time : + Time;
}
function diffTime(){
var startTime = 10*60 + 30; //starting time in minute
var lastTime = 16*60 + 30; //ending time in minutes
var thisTime = new Date(); // now
var currentYear = thisTime.getFullYear();
var currentMonth = thisTime.getMonth();
var currentDay = thisTime.getUTCDate();
var currentHour = thisTime.getHours();
var currentMinute = thisTime.getMinutes();
var currentTime = currentHour*60 + currentMinute; //current time in minute
if(currentTime >= startTime && currentTime < lastTime){
var endTime = new Date(currentYear,currentMonth,currentDay,16,30); // 4:30pm
var diff = endTime.getTime() - thisTime.getTime(); // now
var remainTime = diff / (1000); // positive number of days
remainTime = Math.ceil(remainTime);
CreateTimer("timer", remainTime);
}else{
document.getElementById("timeMsg").innerHTML = "Market closed!! ";
document.getElementById("timer").innerHTML = "00:00:00";
}
}
window.onload = diffTime;
</script>
</head>
<body>
<div><span id="timeMsg">Elapsed time remain: </span><b><span id='timer'></span></b></div>
</body>

Call the function in document.ready()
$( document ).ready( function ()
{
diffTime();
});

If you want it to start after the entire (ie. images, objects, etc.) page has loaded:
$(window).load(function() {}
Otherwise you can start the timer when the HTML has been loaded & DOM is ready:
$(document).ready(function() {}

Running a Javascript Clock at 4x Speed [duplicate]

This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Javascript to run the Clock (date and time) 4 times speeder
I'm trying to make a clock that starts at a time value (hh:mm:ss) that I've supplied, and runs at 4x speed (for the server time of an online game that runs 4x actual time). I've modified a free clock that I found online to do this, but it only works for every other minute (try the code below to see exactly what I mean if that doesn't make sense).
var customClock = (function () {
var timeDiff;
var timeout;
function addZ(n) {
return (n < 10 ? '0' : '') + n;
}
function formatTime(d) {
t1 = d.getHours();
t2 = d.getMinutes();
t3 = d.getSeconds() * 4;
if (t3 > 59) {
t3 = t3 - 60;
t2 = t2 + 1;
}
if (t2 > 59) {
t2 = t2 - 60;
t1 = t1 + 1;
}
if (t1 > 23) {
t1 = 0;
}
return addZ(t1) + ':' + addZ(t2) + ':' + addZ(t3);
}
return function (s) {
var now = new Date();
var then;
var lag = 1015 - now.getMilliseconds();
if (s) {
s = s.split(':');
then = new Date(now);
then.setHours(+s[0], +s[1], +s[2], 0);
timeDiff = now - then;
}
now = new Date(now - timeDiff);
document.getElementById('clock').innerHTML = formatTime(now);
timeout = setTimeout(customClock, lag);
}
}());
window.onload = function () {
customClock('00:00:00');
};
Any idea why this is happening? I'm pretty new to Javascript and this is definitely a little hack-ey. Thanks

i take the orginal time and substract it from the current then multiply it by 4 and add it to the orginal time. I think that should take care or the sync problem.
(function(){
var startTime = new Date(1987,08,13).valueOf() //save the date 13. august 1987
, interval = setInterval(function() {
var diff = Date.now() - startTime
//multiply the diff by 4 and add to original time
var time = new Date(startTime + (diff*4))
console.log(time.toLocaleTimeString())
}, 1000)
}())
How to use with a custom date (use the Date object)
Date(year, month, day, hours, minutes, seconds, milliseconds)

var lag = 1015 - now.getMilliseconds(); is attempting to "run this again a smidge (15 ms) after the next clock tick". Make this value smaller (divide by 4?), and this code will run more frequently.
Next up, get it to show 4x the current clock duration. Similar problem: multiply now's details by 4 either inside or outside formatTime()

I would first create a Clock constructor as follows:
function Clock(id) {
var clock = this;
var timeout;
var time;
this.hours = 0;
this.minutes = 0;
this.seconds = 0;
this.stop = stop;
this.start = start;
var element = document.getElementById(id);
function stop() {
clearTimeout(timeout);
}
function start() {
timeout = setTimeout(tick, 0);
time = Date.now();
}
function tick() {
time += 1000;
timeout = setTimeout(tick, time - Date.now());
display();
update();
}
function display() {
var hours = clock.hours;
var minutes = clock.minutes;
var seconds = clock.seconds;
hours = hours < 10 ? "0" + hours : "" + hours;
minutes = minutes < 10 ? "0" + minutes : "" + minutes;
seconds = seconds < 10 ? "0" + seconds : "" + seconds;
element.innerHTML = hours + ":" + minutes + ":" + seconds;
}
function update() {
var seconds = clock.seconds += 4;
if (seconds === 60) {
clock.seconds = 0;
var minutes = ++clock.minutes;
if (minutes === 60) {
clock.minutes = 0;
var hours = ++clock.hours;
if (hours === 24) clock.hours = 0;
}
}
}
}
Then you can create a clock and start it like this:
var clock = new Clock("clock");
clock.start();
Here's a demo: http://jsfiddle.net/Nt5XN/