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Training #1

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1655721
finished 1 day
Oct 10, 2017
d036331
start second task
Oct 10, 2017
17c3132
finished second lesson
Oct 10, 2017
dc585cd
added 3 day
Oct 18, 2017
b813d82
Merge branch 'training' of https://github.com/StepanNaryshkov/JavaScr…
Oct 18, 2017
c072850
Update index-START.html
StepanNaryshkov Oct 2, 2023
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23 changes: 22 additions & 1 deletion 01 - JavaScript Drum Kit/index-START.html
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,7 @@
<body>


<div class="keys">
<div class="keys" id="keys">
<div data-key="65" class="key">
<kbd>A</kbd>
<span class="sound">clap</span>
Expand Down Expand Up @@ -58,7 +58,28 @@
<audio data-key="76" src="sounds/tink.wav"></audio>

<script>
var currentDiv;

function initKey(e) {
var key = e.keyCode || e.charCode;
var audio = document.querySelector('audio[data-key="'+ key +'"]');
currentDiv = document.querySelector('div[data-key="'+ key +'"]');

if(currentDiv) {
audio.currentTime = 0;
audio.play()
currentDiv.classList.add("playing")
}
}

function deleteKey() {
if(currentDiv) {
currentDiv.classList.remove("playing")
}

}
window.addEventListener("keydown", initKey);
window.addEventListener("keyup", deleteKey);
</script>


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35 changes: 34 additions & 1 deletion 02 - JS and CSS Clock/index-START.html
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,9 @@


<style>
* {
margin: 0;
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@StepanNaryshkov StepanNaryshkov Oct 2, 2023

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please, do not use * selector dut to performance requierements

}
html {
background:#018DED url(http://unsplash.it/1500/1000?image=881&blur=50);
background-size:cover;
Expand Down Expand Up @@ -53,7 +56,7 @@
position: relative;
width: 100%;
height: 100%;
transform: translateY(-3px); /* account for the height of the clock hands */
transform: translateY(-3px) rotate(90deg);
}

.hand {
Expand All @@ -62,11 +65,41 @@
background:black;
position: absolute;
top:50%;
transform-origin: 100% 0;
}

.hour-hand {
transform: rotate(10deg);
}
</style>

<script>
var handHour = document.querySelector(".hour-hand");
var handMin = document.querySelector(".min-hand");
var handSec = document.querySelector(".second-hand");

var now = new Date();
var hours = null;
var minutes = null;
var seconds = null;

function setTime() {
handHour.style.transform = 'rotate(' + hours * 30 + 'deg)';
handMin.style.transform = 'rotate(' + minutes * 6 + 'deg)';
handSec.style.transform = 'rotate(' + seconds * 6 + 'deg)';
}
function result() {
now = new Date();
hours = now.getHours();
hours = hours > 12 ? hours - 12 : hours;
minutes = now.getMinutes();
seconds = now.getSeconds();

setTime();
return seconds;
}

setInterval(result, 1000);


</script>
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32 changes: 28 additions & 4 deletions 03 - CSS Variables/index-START.html
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Original file line number Diff line number Diff line change
Expand Up @@ -21,10 +21,11 @@ <h2>Update CSS Variables with <span class='hl'>JS</span></h2>
<img src="https://source.unsplash.com/7bwQXzbF6KE/800x500">

<style>

/*
misc styles, nothing to do with CSS variables
*/
html {
--blur: 10px;
--spacing: 10px;
--base: #fff;
}

body {
text-align: center;
Expand All @@ -42,9 +43,32 @@ <h2>Update CSS Variables with <span class='hl'>JS</span></h2>
input {
width:100px;
}

img {
filter: blur(var(--blur));
padding: var(--spacing);
background-color: var(--base);
}

</style>

<script>
const root = document.documentElement;
const blur = document.getElementById('blur');
const spacing = document.getElementById('spacing');
const base = document.getElementById('base');

blur.addEventListener('input', function () {
root.style.setProperty('--blur', blur.value + 'px');
})

spacing.addEventListener('input', function () {
root.style.setProperty('--spacing', spacing.value + 'px');
})

base.addEventListener('input', function () {
root.style.setProperty('--base', base.value);
})
</script>

</body>
Expand Down