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Created Countdown Timer using JavaScript #72

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Create Countdown Timer.js
Manali71 Oct 18, 2021
4bbd737
Create Countdown Timer.js
Manali71 Oct 18, 2021
e764d0f
Create Readme.md
Manali71 Oct 18, 2021
125b42c
Update Countdown Timer.js
Manali71 Oct 18, 2021
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170 changes: 170 additions & 0 deletions Javascript/Countdown Timer.js
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Original file line number Diff line number Diff line change
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Countdown Timer</title>
<link href='https://fonts.googleapis.com/css?family=Inconsolata' rel='stylesheet' type='text/css'>
<link rel="stylesheet" href="style.css">
<style>
html {
box-sizing: border-box;
font-size: 10px;
background: #8E24AA;
background: linear-gradient(45deg, #42a5f5 0%,#478ed1 50%,#0d47a1 100%);
}

*, *:before, *:after {
box-sizing: inherit;
}

body {
margin: 0;
text-align: center;
font-family: 'Inconsolata', monospace;
}

.display__time-left {
font-weight: 100;
font-size: 20rem;
margin: 0;
color: white;
text-shadow: 4px 4px 0 rgba(0,0,0,0.05);
}

.timer {
display: flex;
min-height: 100vh;
flex-direction: column;
}

.timer__controls {
display: flex;
}

.timer__controls > * {
flex: 1;
}

.timer__controls form {
flex: 1;
display: flex;
}

.timer__controls input {
flex: 1;
border: 0;
padding: 2rem;
}

.timer__button {
background: none;
border: 0;
cursor: pointer;
color: white;
font-size: 2rem;
text-transform: uppercase;
background: rgba(0,0,0,0.1);
border-bottom: 3px solid rgba(0,0,0,0.2);
border-right: 1px solid rgba(0,0,0,0.2);
padding: 1rem;
font-family: 'Inconsolata', monospace;
}

.timer__button:hover,
.timer__button:focus {
background: rgba(0,0,0,0.2);
outline: 0;
}

.display {
flex: 1;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
}

.display__end-time {
font-size: 4rem;
color: white;
}
</style>
</head>
<body>
<div class="timer">
<div class="timer__controls">
<button data-time="20" class="timer__button">20 Secs</button>
<button data-time="300" class="timer__button">Work 5</button>
<button data-time="900" class="timer__button">Quick 15</button>
<button data-time="1200" class="timer__button">Snack 20</button>
<button data-time="3600" class="timer__button">Lunch Break</button>
<form name="customForm" id="custom">
<input type="text" name="minutes" placeholder="Enter Minutes">
</form>
</div>
<div class="display">
<h1 class="display__time-left"></h1>
<p class="display__end-time"></p>
</div>
</div>

<script>
let countdown;
const timerDisplay = document.querySelector('.display__time-left');
const endTime = document.querySelector('.display__end-time');
const buttons = document.querySelectorAll('[data-time]');

function timer(seconds) {
// clear any existing timers
clearInterval(countdown);

const now = Date.now();
const then = now + seconds * 1000;
displayTimeLeft(seconds);
displayEndTime(then);

countdown = setInterval(() => {
const secondsLeft = Math.round((then - Date.now()) / 1000);
// check if we should stop it!
if(secondsLeft < 0) {
clearInterval(countdown);
return;
}
// display it
displayTimeLeft(secondsLeft);
}, 1000);
}

function displayTimeLeft(seconds) {
const minutes = Math.floor(seconds / 60);
const remainderSeconds = seconds % 60;
const display = `${minutes}:${remainderSeconds < 10 ? '0' : '' }${remainderSeconds}`;
document.title = display;
timerDisplay.textContent = display;
}

function displayEndTime(timestamp) {
const end = new Date(timestamp);
const hour = end.getHours();
const adjustedHour = hour > 12 ? hour - 12 : hour;
const minutes = end.getMinutes();
endTime.textContent = `Be Back At ${adjustedHour}:${minutes < 10 ? '0' : ''}${minutes}`;
}

function startTimer() {
const seconds = parseInt(this.dataset.time);
timer(seconds);
}

buttons.forEach(button => button.addEventListener('click', startTimer));
document.customForm.addEventListener('submit', function(e) {
e.preventDefault();
const mins = this.minutes.value;
console.log(mins);
timer(mins * 60);
this.reset();
});

</script>
</body>
</html>
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@thevirtualbuddy thevirtualbuddy Oct 18, 2021

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Please remove this file. @Manali71

170 changes: 170 additions & 0 deletions Javascript/Countdown Timer/Countdown Timer.js
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,170 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Countdown Timer</title>
<link href='https://fonts.googleapis.com/css?family=Inconsolata' rel='stylesheet' type='text/css'>

<style>
Comment thread
Manali71 marked this conversation as resolved.
html {
box-sizing: border-box;
font-size: 10px;
background: #8E24AA;
background: linear-gradient(45deg, #42a5f5 0%,#478ed1 50%,#0d47a1 100%);
}

*, *:before, *:after {
box-sizing: inherit;
}

body {
margin: 0;
text-align: center;
font-family: 'Inconsolata', monospace;
}

.display__time-left {
font-weight: 100;
font-size: 20rem;
margin: 0;
color: white;
text-shadow: 4px 4px 0 rgba(0,0,0,0.05);
}

.timer {
display: flex;
min-height: 100vh;
flex-direction: column;
}

.timer__controls {
display: flex;
}

.timer__controls > * {
flex: 1;
}

.timer__controls form {
flex: 1;
display: flex;
}

.timer__controls input {
flex: 1;
border: 0;
padding: 2rem;
}

.timer__button {
background: none;
border: 0;
cursor: pointer;
color: white;
font-size: 2rem;
text-transform: uppercase;
background: rgba(0,0,0,0.1);
border-bottom: 3px solid rgba(0,0,0,0.2);
border-right: 1px solid rgba(0,0,0,0.2);
padding: 1rem;
font-family: 'Inconsolata', monospace;
}

.timer__button:hover,
.timer__button:focus {
background: rgba(0,0,0,0.2);
outline: 0;
}

.display {
flex: 1;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
}

.display__end-time {
font-size: 4rem;
color: white;
}
</style>
</head>
<body>
<div class="timer">
<div class="timer__controls">
<button data-time="20" class="timer__button">20 Secs</button>
<button data-time="300" class="timer__button">Work 5</button>
<button data-time="900" class="timer__button">Quick 15</button>
<button data-time="1200" class="timer__button">Snack 20</button>
<button data-time="3600" class="timer__button">Lunch Break</button>
<form name="customForm" id="custom">
<input type="text" name="minutes" placeholder="Enter Minutes">
</form>
</div>
<div class="display">
<h1 class="display__time-left"></h1>
<p class="display__end-time"></p>
</div>
</div>

<script>
let countdown;
const timerDisplay = document.querySelector('.display__time-left');
const endTime = document.querySelector('.display__end-time');
const buttons = document.querySelectorAll('[data-time]');

function timer(seconds) {
// clear any existing timers
clearInterval(countdown);

const now = Date.now();
const then = now + seconds * 1000;
displayTimeLeft(seconds);
displayEndTime(then);

countdown = setInterval(() => {
const secondsLeft = Math.round((then - Date.now()) / 1000);
// check if we should stop it!
if(secondsLeft < 0) {
clearInterval(countdown);
return;
}
// display it
displayTimeLeft(secondsLeft);
}, 1000);
}

function displayTimeLeft(seconds) {
const minutes = Math.floor(seconds / 60);
const remainderSeconds = seconds % 60;
const display = `${minutes}:${remainderSeconds < 10 ? '0' : '' }${remainderSeconds}`;
document.title = display;
timerDisplay.textContent = display;
}

function displayEndTime(timestamp) {
const end = new Date(timestamp);
const hour = end.getHours();
const adjustedHour = hour > 12 ? hour - 12 : hour;
const minutes = end.getMinutes();
endTime.textContent = `Be Back At ${adjustedHour}:${minutes < 10 ? '0' : ''}${minutes}`;
}

function startTimer() {
const seconds = parseInt(this.dataset.time);
timer(seconds);
}

buttons.forEach(button => button.addEventListener('click', startTimer));
document.customForm.addEventListener('submit', function(e) {
e.preventDefault();
const mins = this.minutes.value;
console.log(mins);
timer(mins * 60);
this.reset();
});

</script>
</body>
</html>
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@thevirtualbuddy thevirtualbuddy Oct 18, 2021

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Is it possible to add some surprise element in the program?

5 changes: 5 additions & 0 deletions Javascript/Countdown Timer/Readme.md
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JavaScript Countdown Timer:

This is a simple Javascript timer that counts down the time remiaining until a date/event for some default defined events.