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script.js
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script.js
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const piano = document.querySelector(`.piano`);
const pianoKeys = document.querySelectorAll(`.piano-key`);
const btnContainer = document.querySelector(`.btn-container`);
const buttons = document.querySelectorAll(`.btn`)
const SOUNDS = {
KeyD: `c.mp3`, KeyF: `d.mp3`, KeyG: `e.mp3`,
KeyH: `f.mp3`, KeyJ: `g.mp3`, KeyK: `a.mp3`,
KeyL: `b.mp3`, KeyR: `c♯.mp3`, KeyT: `d♯.mp3`,
KeyU: `f♯.mp3`,KeyI: `g♯.mp3`, KeyO: `a♯.mp3`,
};
//!--------------Toggle button handler-----------------------------------//
btnContainer.addEventListener(`click`, (e) => {
if (e.target.classList.contains(`btn-active`)) {
return;
}
buttons.forEach(btn => btn.classList.toggle(`btn-active`));
pianoKeys.forEach(pianoKey => pianoKey.classList.toggle(`piano-key-letter`));
})
//!-----------------Fullscreen mode------------------------------------//
document.querySelector(`.fullscreen`).addEventListener(`click`, () => {
if (!document.fullscreenElement) {
document.documentElement.requestFullscreen();
} else {
document.exitFullscreen();
}
})
//!-----------------Keyboard handler-----------------------------------//
window.addEventListener(`keydown`, e => {
if (!e.repeat) {
pianoKeyPress(e.code);
pianoKeyPlaySound(e.code);
}
});
function pianoKeyPress(code) {
const pressedKey = document.querySelector(`.piano-key[data-code=${code}]`);
pressedKey?.classList.add(`piano-key-active`);
}
function pianoKeyPlaySound(code) {
if (code in SOUNDS) {
new Audio('assets/audio/' + SOUNDS[code]).play();
}
}
window.addEventListener(`keyup`, e => {
pianoKeyRelease(e.code)
});
function pianoKeyRelease(code) {
const pressedKey = document.querySelector(`.piano-key[data-code=${code}]`);
pressedKey?.classList.remove(`piano-key-active`);
}
//!----------------Mouse click handler---------------------------------//
piano.addEventListener(`mousedown`, addPianoKeyResponse);
function addPianoKeyResponse(e) {
pianoKeyResponse(e)
pianoKeys.forEach(key => {
key.addEventListener(`mouseover`, pianoKeyResponse)
key.addEventListener(`mouseout`, pianoKeyLeave)
})
}
function pianoKeyResponse(e) {
if (e.target.classList.contains(`piano-key`)) {
const code = e.target.dataset.code;
pianoKeyPress(code);
pianoKeyPlaySound(code);
}
}
function pianoKeyLeave(e) {
if (e.target.classList.contains(`piano-key`)) {
const code = e.target.dataset.code;
pianoKeyRelease(code);
}
}
window.addEventListener(`mouseup`, removePianoKeyResponse);
function removePianoKeyResponse(e) {
pianoKeyLeave(e);
pianoKeys.forEach(key => {
key.removeEventListener(`mouseover`, pianoKeyResponse)
key.removeEventListener(`mouseout`, pianoKeyLeave)
})
}