forked from wesbos/JavaScript30
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathindex-jds.html
More file actions
executable file
·114 lines (102 loc) · 3.1 KB
/
index-jds.html
File metadata and controls
executable file
·114 lines (102 loc) · 3.1 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>JS Drum Kit</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="keys">
<div data-key="65" class="key">
<kbd>A</kbd>
<span class="sound">clap</span>
</div>
<div data-key="83" class="key">
<kbd>S</kbd>
<span class="sound">hihat</span>
</div>
<div data-key="68" class="key">
<kbd>D</kbd>
<span class="sound">kick</span>
</div>
<div data-key="70" class="key">
<kbd>F</kbd>
<span class="sound">openhat</span>
</div>
<div data-key="71" class="key">
<kbd>G</kbd>
<span class="sound">boom</span>
</div>
<div data-key="72" class="key">
<kbd>H</kbd>
<span class="sound">ride</span>
</div>
<div data-key="74" class="key">
<kbd>J</kbd>
<span class="sound">snare</span>
</div>
<div data-key="75" class="key">
<kbd>K</kbd>
<span class="sound">tom</span>
</div>
<div data-key="76" class="key">
<kbd>L</kbd>
<span class="sound">tink</span>
</div>
</div>
<audio data-key="65" src="sounds/clap.wav"></audio>
<audio data-key="83" src="sounds/hihat.wav"></audio>
<audio data-key="68" src="sounds/kick.wav"></audio>
<audio data-key="70" src="sounds/openhat.wav"></audio>
<audio data-key="71" src="sounds/boom.wav"></audio>
<audio data-key="72" src="sounds/ride.wav"></audio>
<audio data-key="74" src="sounds/snare.wav"></audio>
<audio data-key="75" src="sounds/tom.wav"></audio>
<audio data-key="76" src="sounds/tink.wav"></audio>
<script>
const keys = document.querySelectorAll('.key'); // cache key elements
const audios = document.getElementsByTagName("audio"); // cache audio elements
const codes = []; // array of codes
/* push each code into codes array */
for (let i = 0; i < audios.length; i++) {
codes.push(parseInt(audios[i].dataset.key));
}
/* get index of key with specific code */
function isMyKey(arr,key,val) {
for (let i = 0; i < arr.length; i++) {
const myCode = parseInt(arr[i].dataset[key]);
if (myCode === val) {
const index = i;
return index;
}
}
}
/* play audio associated w key and start CSS transition */
function playAudio(e) {
// console.group('START playAudio');
const myKey = e.keyCode;
const myIndex = isMyKey(audios,"key",myKey);
console.log('audio played: ', keys[myIndex].children[1].innerHTML);
audios[myIndex].currentTime = 0;
audios[myIndex].play().then(function(){
keys[myIndex].classList.add("playing");
});
// console.groupEnd();
}
/* undo the CSS transition */
function undoTransition(e) {
if (e.propertyName !== 'transform') return; // skip it if it's not a transform
this.classList.remove("playing");
}
/* listen for key down event */
document.addEventListener("keydown", function(){
console.log('key pressed: ', event.key);
// play audio only if it is one of our key codes
if (codes.indexOf(event.keyCode) < 0) return;
playAudio(event);
});
/* listen for transition event */
keys.forEach(key => key.addEventListener('transitionend', undoTransition));
</script>
</body>
</html>