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index.js
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68 lines (50 loc) · 1.3 KB
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const main = () => {
// layout
let render = (template, node) => node.innerHTML = template;
const codeKeys = [
{key: 81, char: 'Q' },
{key: 87, char: 'W' },
{key: 69, char: 'E' },
{key: 65, char: 'A' },
{key: 83, char: 'S' },
{key: 68, char: 'D' },
];
let renderKeys = () => {
let keys = codeKeys.map((v, i) => {
return `
<div data-key=${codeKeys[i].key} class="key">
<kbd>${codeKeys[i].char}</kbd>
<audio data-key=${codeKeys[i].key} src=${
`sounds/${codeKeys[i].key}.wav`
}></audio>
<div class="lambda">λ</div>
</div>
`;
});
render (`
<div class="keys">
${keys}
</div>
`, document.querySelector('#main'));
}
renderKeys();
// ui
let removeTransition = (e) => {
if (e.propertyName !== 'transform') return;
e.target.classList.remove('playing');
}
// playsound
let play = (e) => {
let audio = document.querySelector(`audio[data-key="${e.keyCode}"]`);
let key = document.querySelector(`div[data-key="${e.keyCode}"]`);
if (!audio) return;
key.classList.add('playing');
audio.play();
audio.currentTime = 0;
}
const keys = Array.from(document.querySelectorAll('.key'));
keys.forEach((key) => {
key.addEventListener('transitionend', removeTransition)
});
window.addEventListener('keydown', play);
}