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How can I fix the stop-start process within this Javascript stopwatch-clock?

I have a JavaScript stopwatch here, I require the start-stop button to keep the same time when continuing.
Currently, if I stop and continue the clock diff is something ridiculous such as '-19330839:-3:-53'
Can anyone explain how this is fixed?
I have various method stopwatches made; however I would rather use real date time instead of a counter, this is because (I have tested after being made aware of this) that counters are very inaccurate over a period of time.
Any help is much appreciated.
html:
Please ignore the reset button for now. I will configure this later.
<input id="startstopbutton" class="buttonZ" style="width: 120px;" type="button" name="btn" value="Start" onclick="startstop();">
<input id="resetbutton" class="buttonZ" style="width: 120px;" type="button" name="btnRst1" id='btnRst1' value="Reset" onclick="resetclock();"/>
<div id="outputt" class="timerClock" value="00:00:00">00:00:00</div>
JS:
const outputElement = document.getElementById("outputt");
var startTime = 0;
var running = false;
var splitcounter = 0;
function startstop() {
if (running == false) {
running = true;
startTime = new Date(sessionStorage.getItem("time"))
if (isNaN(startTime)) startTime = Date.now();
startstopbutton.value = 'Stop';
document.getElementById("outputt").style.backgroundColor = "#2DB37B";
updateTimer();
} else {
running = false;
logTime();
startstopbutton.value = 'Start';
document.getElementById("outputt").style.backgroundColor = "#B3321B";
}
}
function updateTimer() {
if (running == true) {
let differenceInMillis = Date.now() - startTime;
sessionStorage.setItem("time", differenceInMillis)
let {
hours,
minutes,
seconds
} = calculateTime(differenceInMillis);
let timeStr = `${pad(hours)}:${pad(minutes)}:${pad(seconds)}`;
outputElement.innerText = timeStr;
requestAnimationFrame(updateTimer);
}
}
function calculateTime(milliS) {
const SECONDS = 1000; // should be 1000 - only 10 to speed up the timer
const MINUTES = 60;
const HOURS = 60;
const RESET = 60;
let hours = Math.floor(milliS / SECONDS / MINUTES / HOURS);
let minutes = Math.floor(milliS / SECONDS / MINUTES) % RESET;
let seconds = Math.floor(milliS / SECONDS) % RESET;
return {
hours,
minutes,
seconds
};
}
function pad(time) {
return time.toString().padStart(2, '0');
}
I just need the timer to continue on from where it was stopped at.

Issue with your code:
You start with initial value for sessionStorage as Date.now but then save difference on update.
You interact a lot with session storage. Any communication with external API is expensive. Instead use local variables and find an event to initialise values.
Time difference logic is a bit off.
Date.now - startTime does not considers the difference between stop action and start action.
You can use this logic: If startTime is defined, calculate difference and add it to start time. If not, initialise it to Date.now()
Suggestions:
Instead of adding styles, use classes. That will help you in reset functionality
Define small features and based on it, define small functions. That would make reusability easy
Try to make functions independent by passing arguments and only rely on them. That way you'll reduce side-effect
Note: as SO does not allow access to Session Storage, I have removed all the related code.
const outputElement = document.getElementById("outputt");
var running = false;
var splitcounter = 0;
var lastTime = 0;
var startTime = 0;
function logTime() {
console.log('Time: ', lastTime)
}
function resetclock() {
running = false;
startTime = 0;
printTime(Date.now())
applyStyles(true)
}
function applyStyles(isReset) {
startstopbutton.value = running ? 'Stop' : 'Start';
document.getElementById("outputt").classList.remove('red', 'green')
if (!isReset) {
document.getElementById("outputt").classList.add(running ? 'red' : 'green')
}
}
function startstop() {
running = !running;
applyStyles();
if (running) {
if (startTime) {
const diff = Date.now() - lastTime;
startTime = startTime + diff;
} else {
startTime = Date.now()
}
updateTimer(startTime);
} else {
lastTime = Date.now()
logTime();
}
}
function printTime(startTime) {
let differenceInMillis = Date.now() - startTime;
let {
hours,
minutes,
seconds
} = calculateTime(differenceInMillis);
let timeStr = `${pad(hours)}:${pad(minutes)}:${pad(seconds)}`;
outputElement.innerText = timeStr;
}
function updateTimer(startTime) {
if (running == true) {
printTime(startTime)
requestAnimationFrame(() => updateTimer(startTime));
}
}
function calculateTime(milliS) {
const SECONDS = 1000; // should be 1000 - only 10 to speed up the timer
const MINUTES = 60;
const HOURS = 60;
const RESET = 60;
let hours = Math.floor(milliS / SECONDS / MINUTES / HOURS);
let minutes = Math.floor(milliS / SECONDS / MINUTES) % RESET;
let seconds = Math.floor(milliS / SECONDS) % RESET;
return {
hours,
minutes,
seconds
};
}
function pad(time) {
return time.toString().padStart(2, '0');
}
.red {
background-color: #2DB37B
}
.green {
background-color: #B3321B
}
<input id="startstopbutton" class="buttonZ" style="width: 120px;" type="button" name="btn" value="Start" onclick="startstop();">
<input id="resetbutton" class="buttonZ" style="width: 120px;" type="button" name="btnRst1" id='btnRst1' value="Reset" onclick="resetclock();" />
<div id="outputt" class="timerClock" value="00:00:00">00:00:00</div>

simple stopwatch example
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<input class="startstop" style="width: 120px;" type="button" value="Start" onclick="startstop();">
<input class="reset" style="width: 120px;" type="button" value="Reset" onclick="reset();"/>
<div class="timerClock" value="00:00:00">00:00:00</div>
<script type="text/javascript">
var second = 0
var minute = 0
var hour = 0
var interval
var status = false
var element = document.querySelector('.startstop')
var clock = document.querySelector('.timerClock')
var string = ''
function startstop()
{
if(status == 'false')
{
element.value = 'Stop'
clock.style.backgroundColor = "#2DB37B";
status = true
interval = setInterval(function()
{
string = ''
second += 1
if(second >= 60)
{
minute += 1
second = 0
}
if(minute >= 60)
{
hour += 1
minute = 0
}
if(hour < 10)
string += `0${hour}:`
else
string += `${hour}:`
if(minute < 10)
string += `0${minute}:`
else
string += `${minute}:`
if(second < 10)
string += `0${second}`
else
string += `${second}`
clock.innerHTML = string
},1000)
}
else
{
clock.style.backgroundColor = "#B3321B";
element.value = 'Start'
status = false
clearInterval(interval)
}
}
function reset()
{
second = 0
minute = 0
hour = 0
status = false
element.value = 'Start'
clearInterval(interval)
clock.innerHTML = `00:00:00`
clock.style.backgroundColor = "transparent";
}
</script>
</body>
</html>

One thing to know about requestAnimationFrame is that it returns an integer that is a reference to the next animation. You can use this to cancel the next waiting animation with cancelAnimationFrame.
As mentioned by #Rajesh, you shouldn't store the time each update, as it will stop the current process for a (very) short while. Better in that case to fire an event, preferably each second, that will wait until it can run. I haven't updated the code to take that into account, I only commented it away for now.
It's also better to use classes than updating element styles. I wrote sloppy code that overwrites all classes on the #outputt element (it's spelled "output"). That's bad programming, because it makes it impossible to add other classes, but it serves the purpose for now. #Rajesh code is better written for this purpose.
I added two variables - diffTime and animationId. The first one corrects startTime if the user pauses. The second one keeps track if there is an ongoing timer animation.
I refactored your style updates into a method of its own. You should check it out, because it defines standard values and then changes them with an if statement. It's less code than having to type document.getElementById("outputt").style... on different rows.
I also added a resetclock method.
const outputElement = document.getElementById("outputt");
var startTime = 0;
var diffTime = 0;
var animationId = 0;
function startstop() {
const PAUSED = 0;
let paused = animationId == PAUSED;
//diffTime = new Date(sessionStorage.getItem("time")) || 0;
startTime = Date.now() - diffTime;
if (paused) {
updateTimer();
} else {
cancelAnimationFrame(animationId);
animationId = PAUSED;
}
updateTimerClass(paused);
}
function updateTimerClass(paused) {
var outputClass = 'red';
var buttonText = 'Start';
if (paused) {
outputClass = 'green';
buttonText = 'Stop';
}
startstopbutton.value = buttonText;
outputElement.classList = outputClass;
}
function updateTimer() {
let differenceInMillis = Date.now() - startTime;
//sessionStorage.setItem("time", differenceInMillis)
let {
hours,
minutes,
seconds
} = calculateTime(differenceInMillis);
let timeStr = `${pad(hours)}:${pad(minutes)}:${pad(seconds)}`;
outputElement.innerText = timeStr;
diffTime = differenceInMillis;
animationId = requestAnimationFrame(updateTimer);
}
function calculateTime(milliS) {
const SECONDS = 1000; // should be 1000 - only 10 to speed up the timer
const MINUTES = 60;
const HOURS = 60;
const RESET = 60;
let hours = Math.floor(milliS / SECONDS / MINUTES / HOURS);
let minutes = Math.floor(milliS / SECONDS / MINUTES) % RESET;
let seconds = Math.floor(milliS / SECONDS) % RESET;
return {
hours,
minutes,
seconds
};
}
function pad(time) {
return time.toString().padStart(2, '0');
}
function resetclock() {
let paused = animationId == 0;
startTime = Date.now();
diffTime = 0;
if (paused) {
const REMOVE_ALL_CLASSES = '';
outputElement.className = REMOVE_ALL_CLASSES;
outputElement.innerText = '00:00:00';
}
}
#outputt.green {
background-color: #2DB37B;
}
#outputt.red {
background-color: #B3321B;
}
<input id="startstopbutton" class="buttonZ" style="width: 120px;" type="button" name="btn" value="Start" onclick="startstop();">
<input id="resetbutton" class="buttonZ" style="width: 120px;" type="button" name="btnRst1" id='btnRst1' value="Reset" onclick="resetclock();"/>
<div id="outputt" class="timerClock" value="00:00:00">00:00:00</div>

class Stopwatch {
constructor(display, results) {
this.running = false;
this.display = display;
this.results = results;
this.laps = [];
this.reset();
this.print(this.times);
}
reset() {
this.times = [ 0, 0, 0 ];
}
click(){
var x=document.getElementById('ctrl');
if(x.value=="start"){
this.start();
x.value="stop";
document.getElementById("outputt").style.backgroundColor = "#2DB37B";
}
else{
x.value="start";
this.stop();
document.getElementById("outputt").style.backgroundColor = "#B3321B";
}
}
start() {
if (!this.time) this.time = performance.now();
if (!this.running) {
this.running = true;
requestAnimationFrame(this.step.bind(this));
}
}
stop() {
this.running = false;
this.time = null;
}
resets() {
document.getElementById("outputt").style.backgroundColor = "#2DB37B";
if (!this.time) this.time = performance.now();
if (!this.running) {
this.running = true;
requestAnimationFrame(this.step.bind(this));
}
this.reset();
}
step(timestamp) {
if (!this.running) return;
this.calculate(timestamp);
this.time = timestamp;
this.print();
requestAnimationFrame(this.step.bind(this));
}
calculate(timestamp) {
var diff = timestamp - this.time;
// Hundredths of a second are 100 ms
this.times[2] += diff / 1000;
// Seconds are 100 hundredths of a second
if (this.times[2] >= 100) {
this.times[1] += 1;
this.times[2] -= 100;
}
// Minutes are 60 seconds
if (this.times[1] >= 60) {
this.times[0] += 1;
this.times[1] -= 60;
}
}
print() {
this.display.innerText = this.format(this.times);
}
format(times) {
return `\
${pad0(times[0], 2)}:\
${pad0(times[1], 2)}:\
${pad0(Math.floor(times[2]), 2)}`;
}
}
function pad0(value, count) {
var result = value.toString();
for (; result.length < count; --count)
result = '0' + result;
return result;
}
function clearChildren(node) {
while (node.lastChild)
node.removeChild(node.lastChild);
}
let stopwatch = new Stopwatch(
document.querySelector('.stopwatch'),
document.querySelector('.results'));
<input type="button" id="ctrl" value="start" onClick="stopwatch.click();">
<input type="button" value="Reset" onClick="stopwatch.resets();">
<div id="outputt" class="stopwatch"></div>

JavaScript Timer Based Popup

trying to make a simple timer based popup.
once the timer reach 10 second popup will be visible.
timer should pause or stop, after clicking on 'ok' button of popup, timer should restart from 0. please help
https://jsfiddle.net/ckf0g9qj/5/
var span = document.querySelector("#time");
countDown(0);
function countDown(counter) {
var interval = setInterval(function() {
var minutes = ((counter / 60) | 0) + "";
var seconds = (counter % 60) + "";
var format = "" +
new Array(3 - minutes.length).join("0") + minutes + ':' + new Array(3 - seconds.length).join("0") + seconds;
span.innerHTML = format;
counter++;
if (seconds == 10) {
// $("#timeModal").modal(); BS model box open
// countDown(0);
document.getElementById("popup").style.visibility = "visible";
}
}, 1e3)
}
function timerReset() {
countDown(0);
alert("ok");
document.getElementById("popup").style.visibility = "hidden";
}

use clearInterval when you reach seconds == 10 condition
I think this is what you are looking for:
#popup {
width:200px;
height:200px;
border:solid 1px red;
visibility:hidden;
}
<!-- begin snippet: js hide: false console: true babel: false -->
<div id="time"></div>
<div id="popup">
<button id="ok" onclick="timerReset()">
Ok
</button>
</div>
<script>
var span = document.querySelector("#time");
countDown(0);
function countDown(counter) {
var interval = setInterval(function() {
var minutes = ((counter / 60) | 0) + "";
var seconds = (counter % 60) + "";
var format = "" +
new Array(3 - minutes.length).join("0") + minutes +
':' +
new Array(3 - seconds.length).join("0") + seconds;
span.innerHTML = format;
counter++;
if (seconds == 10) {
clearInterval(interval);
// $("#timeModal").modal(); BS model box open
// countDown(0);
document.getElementById("popup").style.visibility = "visible";
}
}, 1e3)
}
function timerReset() {
countDown(0);
alert("ok");
document.getElementById("popup").style.visibility = "hidden";
}
</script>

Enable button when counter reaches zero

I have a button its disabled and i want to put a counter inside it, what i want to do is when the counter reaches zero it get enabled, how can i do that? in the code below the counter doesn't appear inside the button and i don't want the reset button i just want the button to be enabled when it reaches zero, here is what i have tried so far:
function Countdown()
{
this.start_time = "00:30";
this.target_id = "#timer";
this.name = "timer";
this.reset_btn = "#reset";
}
Countdown.prototype.init = function()
{
this.reset();
setInterval(this.name + '.tick()',1000)
}
Countdown.prototype.reset = function()
{
$(this.reset_btn).hide();
time = this.start_time.split(":");
//this.minutes = parseInt(time[0]);
this.seconds = parseInt(time[1]);
this.update_target();
}
Countdown.prototype.tick = function()
{
if(this.seconds > 0) //|| this.minutes > 0)
{
if(this.seconds == 0)
{
// this.minutes = this.minutes - 1;
this.seconds = 59
} else {
this.seconds = this.seconds - 1;
}
}
this.update_target()
}
Countdown.prototype.update_target = function()
{
seconds = this.seconds;
if (seconds == 0) $(this.reset_btn).show();
else if(seconds < 10) seconds = "0" + seconds;
$(this.target_id).val(this.seconds)
}
timer = new Countdown();
timer.init();
$(document).ready(function(){
$("#reset").click(function(){
//timer = new Countdown();
timer.reset();
});
});
.hidden {
display: none;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<button type="text" id="timer" disabled>Counter should be inside me, and enable me when it reaches 0</button>
<button id="reset">Reset</button>

This is much simpler than what you've got. Just use window.setTimeout().
Keep in mind that tracking time to a high precision is not super reliable in a browser. You may want to look at moment.js or use performance.now() for an easier API to handle that.
// Get refreence to span and button
var spn = document.getElementById("count");
var btn = document.getElementById("btnCounter");
var count = 5; // Set count
var timer = null; // For referencing the timer
(function countDown(){
// Display counter and start counting down
spn.textContent = count;
// Run the function again every second if the count is not zero
if(count !== 0){
timer = setTimeout(countDown, 1000);
count--; // decrease the timer
} else {
// Enable the button
btn.removeAttribute("disabled");
}
}());
<button id="btnCounter" disabled>Time left: <span id="count"></span></button>

JS function stopwatch application confuses the user

I wrote a javascript application but I end up with a total confusion. This js application needs to run in minutes, seconds, and hundredths of seconds. The part about this mess is when the stopwatch show, in this case 03:196:03. Here is my confusion. When the stopwatch shows 196, is it showing hundredth of seconds? Does anybody can check my function and tell me what part needs to be corrected in case that the function is wrong?
<html>
<head>
<title>my example</title>
<script type="text/javascript">
//Stopwatch
var time = 0;
var started;
var run = 0;
function startWatch() {
if (run == 0) {
run = 1;
timeIncrement();
document.getElementById("countDown").disabled = true;
document.getElementById("resetCountDown").disabled = true;
document.getElementById("start").innerHTML = "Stop";
} else {
run = 0;
document.getElementById("start").innerHTML = "Resume";
}
}//End function startWatch
function watchReset() {
run = 0;
time = 0;
document.getElementById("start").innerHTML = "Start";
document.getElementById("output").innerHTML = "00:00:00";
document.getElementById("countDown").disabled = false;
document.getElementById("resetCountDown").disabled = false;
}//End function watchReset
function timeIncrement() {
if (run == 1) {
setTimeout(function () {
time++;
var min = Math.floor(time/10/60);
var sec = Math.floor(time/10);
var tenth = time % 10;
if (min < 10) {
min = "0" + min;
}
if (sec <10) {
sec = "0" + sec;
} else if (sec>59) {
var sec;
}
document.getElementById("output").innerHTML = min + ":" + sec + ":0" + tenth;
timeIncrement();
},10);
}
} // end function timeIncrem
function formatNumber(n){
return n > 9 ? "" + n: "0" + n;
}
</script>
</head>
<body>
<h1>Stopwatch</h1>
<p id="output"></p>
<div id="controls">
<button type="button" id ="start" onclick="startWatch();">Start</button>
<button type="button" id ="reset" onclick="watchReset();">Reset</button>
</div>
</body>
</html>

Your code is totally weird!
First you're using document.getElementById() for non-existing elements: maybe they belong to your original code and your didn't posted it complete.
Then I don't understand your time-count method:
you make timeIncrement() to be launched every 10 ms: so time/10 gives you a number of milliseconds
but you compute min and sec as if it was a number of seconds!
From there, all is wrong...
Anyway IMO your could make all that simpler using the getMilliseconds() function of the Date object.

Try this:
document.getElementById("output").innerHTML = [
Math.floor(time/100/60 % 60),
Math.floor(time/100 % 60),
time % 100
].map(formatNumber).join(':')
var time = 0;
var started;
var run = 0;
function startWatch() {
if (run == 0) {
run = 1;
timeIncrement();
} else {
run = 0;
}
}
function watchReset() {
run = 0;
time = 0;
document.getElementById("output").innerHTML = "00:00:00";
}
function timeIncrement() {
if (run == 1) {
setTimeout(function () {
time++;
document.getElementById("output").innerHTML = [
Math.floor(time/100/60 % 60),
Math.floor(time/100 % 60),
time % 100
].map(formatNumber).join(':')
timeIncrement();
},10);
}
}
function formatNumber(n){
return (n < 10 ? "0" : "") + n;
}
startWatch()
<div id="output"></div>

Having trouble with Javascript Stopwatch

I'm working on a stopwatch, and this is my code for it. It makes perfect sense for me, but doesn't want to update for some reason.
HTML:
<ul>
<li id="hour">0</li>
<li>:</li>
<li id="min">0</li>
<li>:</li>
<li id="sec">0</li>
</ul>
JS:
var sec = document.getElementById("sec").value,
min = document.getElementById("min").value,
hour = document.getElementById("hour").value;
function stopWatch(){
sec++;
if(sec > 59) {
sec = 0;
min++;
} else if(min > 59){
min = 0;
hour++;
}
window.setTimeout("stopWatch()", 1000);
}
stopWatch();

A list item has no .value property. Inputs or textareas have. It should be
var sec = parseInt(document.getElementById("sec").innerHTML, 10),
min = parseInt(document.getElementById("min").innerHTML, 10),
hour = parseInt(document.getElementById("hour").innerHTML, 10);
which is also parsing them into numbers.
Also, don't pass a string to setTimeout. Pass the function you want to be called:
window.setTimeout(stopWatch, 1000);
And nowhere in your code you are outputting the updated variables. They are no magic pointers to the DOM properties, but just hold numbers (or strings in your original script).
Last but not least there's a logic error in your code. You are checking whether the minutes exceed 59 only when the seconds didn't. Remove that else before the if.

1) List items LI don't have values, they have innerHTML.
var sec = document.getElementById("sec").innerHTML; (not .value)
2) Nowhere in your code do you set the contents of your LIs. JavaScript doesn't magically associate IDs with variables - you have to do that bit yourself.
Such as:
document.getElementById("hour").innerHTML = hour;
3) Never pass a timeout as a string. Use an anonymous function:
window.setTimeout(function() {stopWatch()}, 1000);
or, plainly:
window.setTimeout(stopWatch, 1000);

(function() {
var sec = document.getElementById("sec").value,
min = document.getElementById("min").value,
hour = document.getElementById("hour").value;
function stopWatch(){
sec++;
if(sec > 59) {
sec = 0;
min++;
} else if(min > 59){
min = 0;
hour++;
}
document.getElementById("sec").textContent = sec
document.getElementById("min").textContent = min
document.getElementById("hour").textContent = hour
window.setTimeout(stopWatch, 1000);
}
stopWatch();
})();

The invocation should only be
window.setInterval(stopWatch, 1000);
So to use the stopwatch, put the function inside:
var sec = 0, min = 0, hour = 0;
window.setInterval(function () {
"use strict";
sec++;
if (sec > 59) {
sec = 0;
min++;
} else if (min > 59) {
min = 0;
hour++;
}
document.getElementById("sec").innerHTML = sec;
document.getElementById("min").innerHTML = hour;
document.getElementById("hour").innerHTML = hour;
}, 1000);

Li elements has no value propertie, use innerHTML.
You could store the values for sec, min & hour in variables.
It is a nice idea to store the setTimeout() call to a variable in case you want to stop the clock later. Like "pause".
http://jsfiddle.net/chepe263/A3a9m/4/
<html>
<head>
<style type="text/css">
ul li{
float: left;
list-style-type: none !important;
}
</style>
<script type="text/javascript">//<![CDATA[
window.onload=function(){
var sec = min = hour = 0;
var clock = 0;
stopWatch = function(){
clearTimeout(clock);
sec++;
if (sec >=59){
sec = 0;
min++;
}
if (min>=59){
min=0;
hour++;
}
document.getElementById("sec").innerHTML = (sec < 10) ? "0" + sec : sec;
document.getElementById("min").innerHTML = (min < 10) ? "0" + min : min;
document.getElementById("hour").innerHTML = (hour < 10) ? "0" + hour : hour;
clock = setTimeout("stopWatch()",1000); }
stopWatch();
pause = function(){
clearTimeout(clock);
return false;
}
play = function(){
stopWatch();
return false;
}
reset = function(){
sec = min = hour = 0;
stopWatch();
return false;
}
}//]]>
</script>
</head>
<body>
<ul>
<li id="hour">00</li>
<li>:</li>
<li id="min">00</li>
<li>:</li>
<li id="sec">49</li>
</ul>
<hr />
Pause
Continue
Reset
</body>
</html>

This is my complete code, this may help you out:
<html>
<head>
<title>Stopwatch Application ( Using JAVASCRIPT + HTML + CSS )</title>
<script language="JavaScript" type="text/javascript">
var theResult = "";
window.onload=function() { document.getElementById('morefeature').style.display = 'none'; }
function stopwatch(text) {
var d = new Date(); var h = d.getHours(); var m = d.getMinutes(); var s = d.getSeconds(); var ms = d.getMilliseconds();
document.stopwatchclock.stpwtch.value = + h + " : " + m + " : " + s + " : " + ms;
if (text == "Start") {
document.stopwatchclock.theButton.value = "Stop";
document.stopwatchclock.theButton.title = "The 'STOP' button will save the current stopwatch time in the stopwatch history, halt the stopwatch, and export the history as JSON object. A stopped stpwatch cannot be started again.";
document.getElementById('morefeature').style.display = 'block';
}
if (text == "Stop") {
var jsnResult = arrAdd();
var cnt = 0; var op= 'jeson output';
for (var i = 0; i < jsnResult.length; i++) {
if (arr[i] !== undefined) {
++cnt; /*json process*/
var j={ Record : cnt, Time : arr[i]};
var dq='"';
var json="{";
var last=Object.keys(j).length;
var count=0;
for(x in j){ json += dq+x+dq+":"+dq+j[x]+dq; count++;
if(count<last)json +=",";
}
json+="}<br>";
document.write(json);
}
}
}
if (document.stopwatchclock.theButton.value == "Start") { return true; }
SD=window.setTimeout("stopwatch();", 100);
theResult = document.stopwatchclock.stpwtch.value;
document.stopwatchclock.stpwtch.title = "Start with current time with the format (hours:mins:secs.milliseconds)" ;
}
function resetIt() {
if (document.stopwatchclock.theButton.value == "Stop") { document.stopwatchclock.theButton.value = "Start"; }
window.clearTimeout(SD);
}
function saveIt() {
var value = parseInt(document.getElementById('number').value, 10);
value = isNaN(value) ? 0 : value; value++;
document.getElementById('number').value = value;
var resultTitle = '';
if(value == '1'){ resultTitle = "<h3>History</h3><hr color='black'>"; }
var objTo = document.getElementById('stopwatchresult')
var spanTag = document.createElement("span");
spanTag.id = "span"+value;
spanTag.className ="stopWatchClass";
spanTag.title ="The stopwatch showing current stopwatch time and a history of saved times. Each saved time are shown as total duration (split time - stopwatch start time) and a lap duration (split time - previous split time). And durations are shown in this format: 'hours:mins:secs.milliseconds'";
spanTag.innerHTML = resultTitle +"<br/><b>Record " + value+" =</b> " + theResult + "";
objTo.appendChild(spanTag);
arrAdd(theResult);
return;
}
var arr = Array();
function arrAdd(value){ arr.push(value); return arr;}
</script>
<style>
center {
width: 50%;
margin-left: 25%;
}
.mainblock {
background-color: #07c1cc;
}
.stopWatchClass {
background-color: #07c1cc;
display: block;
}
#stopwatchclock input {
margin-bottom: 10px;
width: 120px;
}
</style>
</head>
<body>
<center>
<div class="mainblock">
<h1><b title="Stopwatch Application ( Using JAVASCRIPT + HTML + CSS )">Stopwatch Application</b></h1>
<form name="stopwatchclock" id="stopwatchclock">
<input type="text" size="16" class="" name="stpwtch" value=" 00 : 00 : 00 : 00" title="Initially blank" />
<input type="button" name="theButton" id="start" onClick="stopwatch(this.value);" value="Start" title="The 'START' button is start the stopwatch. An already started stopwatch cannot be started again." /><br />
<div id="morefeature">
<input type="button" value="Reset" id="resetme" onClick="resetIt();reset();" title="Once you will click on 'RESET' button will entirely reset the stopwatch so that it can be started again." />
<input type="button" name="saver" id="split" value="SPLIT" onClick="saveIt();" title="The 'SPLIT' button will save the current stopwatch time in the stopwatch history. The stopwatch will continue to progress after split." />
<div>
<input type="hidden" name="number" id="number" value="0" />
</form>
</div>
<div id="stopwatchresult"></div>
</center>
</body>