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Created Sep 25, 2020
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<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="UTF-8">
<link rel="stylesheet" href="style.css">
</head>
<body>
<p class='title'>Piano Player</p>
<p id='demo'>Follow the song below to play the piano.</p>
<section class="piano">
<section id='c-key' class="key">
<section class='keynote'>C</section>
</section>
<section id='c-sharp-key' class="black-key">
<section class='black-keynote'>C#</section>
</section>
<section id='d-key' class="key">
<section class='keynote'>D</section>
</section>
<section id='d-sharp-key' class="black-key">
<section class='black-keynote'>D#</section>
</section>
<section id='e-key' class="key">
<section class='keynote'>E</section>
</section>
<section id='f-key' class="key">
<section class='keynote'>F</section>
</section>
<section id='f-sharp-key' class="black-key">
<section class='black-keynote'>F#</section>
</section>
<section id='g-key' class="key">
<section class='keynote'>G</section>
</section>
<section id='g-sharp-key' class="black-key">
<section class='black-keynote'>G#</section>
</section>
<section id='a-key' class="key">
<section class='keynote'>A</section>
</section>
<section id='a-sharp-key' class="black-key">
<section class='black-keynote'>A#</section>
</section>
<section id='b-key' class="key">
<section class='keynote'>B</section>
</section>
<section id='high-c-key' class="key">
<div class='keynote'>C</div>
</section>
</section>
<section id='lyrics'>
<section id='column-one'>
<section id="word-one">HAP-</section>
<section id="letter-note-one">G</section>
</section>
<section id='column-two'>
<section id="word-two">PY</section>
<section id="letter-note-two">G</section>
</section>
<section id='column-three'>
<section id="word-three">BIRTH-</section>
<section id="letter-note-three">A</section>
</section>
<section id='column-four'>
<section id="word-four">DAY</section>
<section id="letter-note-four">G</section>
</section>
<section id='column-five'>
<section id="word-five">TO</section>
<section id="letter-note-five">C</section>
</section>
<section id='column-six'>
<section id="word-six">YOU</section>
<section id="letter-note-six">B</section>
</section>
<section id='column-optional' class='column-optional'>
<section id="word-optional">END</section>
<section id="letter-note-optional">A</section>
</section>
<button id="first-next-line">Line 2</button>
<button id="second-next-line">Line 3</button>
<button id="third-next-line">Line 4</button>
<button id="fourth-next-line">Reset</button>
</section>
<script src="main.js"></script>
</body>
</html>
// The keys and notes variables store the piano keys
const keys = ['c-key', 'd-key', 'e-key', 'f-key', 'g-key', 'a-key', 'b-key', 'high-c-key', 'c-sharp-key', 'd-sharp-key', 'f-sharp-key', 'g-sharp-key', 'a-sharp-key'];
const notes = [];
keys.forEach(function(key){
notes.push(document.getElementById(key));
})
// Write named functions that change the color of the keys below
const keyPlay = (event) => {
event.target.style.backgroundColor = 'cyan';
};
const keyReturn = (event) =>{
event.target.style.backgroundColor = '';
};
// Write a named function with event handler properties
const nFunction = (note) => {
note.onmousedown = keyPlay;
note.onmouseup = keyReturn;
};
// Write a loop that runs the array elements through the function
notes.forEach(nFunction);
// These variables store the buttons that progress the user through the lyrics
let nextOne = document.getElementById('first-next-line');
let nextTwo = document.getElementById('second-next-line');
let nextThree = document.getElementById('third-next-line');
let startOver = document.getElementById('fourth-next-line');
// This variable stores the '-END' lyric element
let lastLyric = document.getElementById('column-optional');
// These statements are "hiding" all the progress buttons, but the first one
nextTwo.hidden = true;
nextThree.hidden = true;
startOver.hidden= true;
// Write anonymous event handler property and function for the first progress button
nextOne.onclick = () => {
nextTwo.hidden = false;
nextOne.hidden = true;
document.getElementById('letter-note-five').innerHTML = 'D';
document.getElementById('letter-note-six').innerHTML = 'C';
};
// Write anonymous event handler property and function for the second progress button
nextTwo.onclick = () => {
nextThree.hidden = false;
nextTwo.hidden = true;
document.getElementById('word-five').innerHTML = 'DEAR';
document.getElementById('word-six').innerHTML = 'FRI-';
lastLyric.style.display = 'inline-block';
document.getElementById('letter-note-three').innerHTML = 'G';
document.getElementById('letter-note-four').innerHTML = 'E';
document.getElementById('letter-note-five').innerHTML = 'C';
document.getElementById('letter-note-six').innerHTML = 'B';
};
// Write anonymous event handler property and function for the third progress button
nextThree.onclick = () => {
startOver.hidden = false;
nextThree.hidden = true;
document.getElementById('word-one').innerHTML = 'HAP-';
document.getElementById('word-two').innerHTML = 'PY';
document.getElementById('word-three').innerHTML = 'BIRTH';
document.getElementById('word-four').innerHTML = 'DAY';
document.getElementById('word-five').innerHTML = 'TO';
document.getElementById('word-six').innerHTML = 'YOU!';
document.getElementById('letter-note-one').innerHTML = 'F';
document.getElementById('letter-note-two').innerHTML = 'F';
document.getElementById('letter-note-three').innerHTML = 'E';
document.getElementById('letter-note-four').innerHTML = 'C';
document.getElementById('letter-note-five').innerHTML = 'D';
document.getElementById('letter-note-six').innerHTML = 'C';
lastLyric.style.display = 'none';
};
// This is the event handler property and function for the startOver button
startOver.onclick = function() {
nextOne.hidden = false;
startOver.hidden = true;
document.getElementById('word-one').innerHTML = 'HAP-';
document.getElementById('letter-note-one').innerHTML = 'G';
document.getElementById('word-two').innerHTML = 'PY';
document.getElementById('letter-note-two').innerHTML = 'G';
document.getElementById('word-three').innerHTML = 'BIRTH-';
document.getElementById('letter-note-three').innerHTML = 'A';
document.getElementById('word-four').innerHTML = 'DAY';
document.getElementById('letter-note-four').innerHTML = 'G';
document.getElementById('word-five').innerHTML = 'TO';
document.getElementById('letter-note-five').innerHTML = 'C';
document.getElementById('word-six').innerHTML = 'YOU!';
document.getElementById('letter-note-six').innerHTML = 'B';
}
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