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chords.html
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<!DOCTYPE html>
<html>
<head>
<title>Guitar Chord Visualization</title>
<meta name="viewport" content="initial-scale=1" />
<script src="./fretboard/jquery.js"></script>
<script src="./fretboard/fretboard.js"></script>
<link rel="stylesheet" type="text/css" href="./fretboard/styles.css" />
<link rel="stylesheet" type="text/css" href="./styles.css" />
<script src="./Triad.js"></script>
<h1>Guitar Chord Visualization</h1>
</head>
<body>
<div class="container">
<div class="my-fretboard-js"></div>
<br>
<div class="my-controlpanel-js">
<div class="horizontal-group">
<label for="tuning">Tuning: </label>
<input type="text" id="tuning" name="tuning" required minlength="6" maxlength="6" size="10" value="EADGBE" />
<button id="change-tuning" class="change-tuning">Set Tuning</button>
</div>
<div class="horizontal-group">
<label for="chord">Chord: </label>
<select id="selectRootNote"> </select>
<select id="selectChordModification"> </select>
<label id="notes">notes</label>
</div>
</div>
</div>
<script type="text/javascript">
// Reset the fretboard and set the header notes to grey
function clear(api, tuning) {
api.clearClickedNotes();
var baseNotes = [
{
string: {
letter: tuning[0].letter,
octave: tuning[0].octave,
},
notes: [
{
fret: 0,
cssClass: "grey",
},
],
},
{
string: {
letter: tuning[1].letter,
octave: tuning[1].octave,
},
notes: [
{
fret: 0,
cssClass: "grey",
},
],
},
{
string: {
letter: tuning[2].letter,
octave: tuning[2].octave,
},
notes: [
{
fret: 0,
cssClass: "grey",
},
],
},
{
string: {
letter: tuning[3].letter,
octave: tuning[3].octave,
},
notes: [
{
fret: 0,
cssClass: "grey",
},
],
},
{
string: {
letter: tuning[4].letter,
octave: tuning[4].octave,
},
notes: [
{
fret: 0,
cssClass: "grey",
},
],
},
{
string: {
letter: tuning[5].letter,
octave: tuning[5].octave,
},
notes: [
{
fret: 0,
cssClass: "grey",
},
],
},
];
api.setClickedNotes(baseNotes);
}
// Update the fretboard given the root note, modication and tuning
function updateFretboard(api, root, modification, tuning) {
clear(api, tuning);
// Use the root node, steps and modification to determine the chord
var steps = "WWHWWWH";
var t = new Triad(root, steps);
chord = t["_" + modification];
// Determine which notes on the fretboard match the notes in our chord
var notesToClick = [];
all = api.getAllNotes();
all.forEach(function (noteGroup) {
notes = [];
noteGroup.notes.forEach(function (note) {
// Handle A#/Bb etc.
var noteLetters = note.letter.split("/");
noteLetters.forEach(function (letter) {
if ($.inArray(letter, chord) >= 0) {
note_color = 'black';
if (root == letter) {
note_color = 'red';
}
notes.push({
fret: note.fret,
cssClass: note_color,
});
}
});
});
if (notes.length > 0) {
notesToClick.push({
string: {
letter: noteGroup.string.letter,
octave: noteGroup.string.octave,
},
notes: notes,
});
}
});
// Update the notes making up the chort
$("#notes")[0].innerText = chord.toString();
// Set the selected notes on the fretboard
api.setClickedNotes(notesToClick);
// Set the info pannel
$("#scale")[0].innerText = t.scale;
$("#allnotes")[0].innerText = t.notes;
}
// Initialize the app
(function ($) {
// Triad implements the music theory. Use it to determine the cord
var root = Triad.NOTES[0];
var modification = Triad.CHORD_MODIFICATIONS[0];
var isChordMode = true;
var isDisabled = true;
var noteLetters = ["C", "C#/Db", "D", "D#/Eb", "E", "F", "F#/Gb", "G", "Ab/G#", "A", "A#/Bb", "B"];
var tuning = [
{
letter: "E",
octave: 4,
},
{
letter: "B",
octave: 3,
},
{
letter: "G",
octave: 3,
},
{
letter: "D",
octave: 3,
},
{
letter: "A",
octave: 2,
},
{
letter: "E",
octave: 2,
},
];
var numFrets = 16;
var dimensionsFunc = function ($fretboardContainer, $fretboardBody, settings) {
var width = $(window).width();
var height;
if (width <= 768) {
height = settings.tuning.length * 26;
} else {
height = settings.tuning.length * 32;
}
return {
height: height,
};
};
var noteCircles = [3, 5, 7, 9, 12, 15, 17, 19, 21, 24];
var intervals = ["1", "b2", "2", "b3", "3", "4", "b5", "5", "b6", "6", "b7", "7"];
var animationSpeed = 400; // ms
var noteMode = "letter"; // or "interval"
var clickedNotesChangedFunc = function () {
console.log($fretboard.data("api").getClickedNotes());
};
// Set up the fretboard via its options
var options = {
tuning: tuning,
numFrets: numFrets,
isChordMode: isChordMode,
noteClickingDisabled: isDisabled,
noteLetters: noteLetters,
noteMode: noteMode,
intervals: intervals,
root: root,
animationSpeed: animationSpeed,
noteCircles: noteCircles,
dimensionsFunc: dimensionsFunc,
notesClickedCallback: clickedNotesChangedFunc,
};
var $fretboard = $(".my-fretboard-js");
console.log(options)
$fretboard.fretboard(options);
var api = $fretboard.data("api");
// Set the fretboard tuning according to #tuning
$(".change-tuning").on("click", function () {
var t = $("#tuning").val();
tuning = [
{
letter: t[5],
octave: 4,
},
{
letter: t[4],
octave: 3,
},
{
letter: t[3],
octave: 3,
},
{
letter: t[2],
octave: 3,
},
{
letter: t[1],
octave: 2,
},
{
letter: t[0],
octave: 2,
},
];
api.setTuning($.extend(true, [], tuning));
});
// Add handler to update the fretboard based on root note selection
$("#selectRootNote").on("change", function () {
var selector = $("#selectRootNote");
var index = selector[0].selectedIndex;
if (index != -1) {
root = selector[0].options[index].text;
}
updateFretboard(api, root, modification, tuning);
console.log("Updated selectRootNote");
});
// Add handler to update the fretboard based on chord modification selection
$("#selectChordModification").on("change", function () {
var selector = $("#selectChordModification");
var index = selector[0].selectedIndex;
if (index != -1) {
modification = selector[0].options[index].text;
}
updateFretboard(api, root, modification, tuning);
console.log("Updated selectChordModification");
});
// Populate the root note selector
var selectRootNote = document.getElementById("selectRootNote");
for (var i = 0; i < Triad.NOTES.length; i++) {
var opt = Triad.NOTES[i];
var el = document.createElement("option");
el.textContent = opt;
el.value = opt;
selectRootNote.appendChild(el);
}
$(".selectRootNote").value = root;
// Populate the chord modification selector
var selectChordModification = document.getElementById("selectChordModification");
for (var i = 0; i < Triad.CHORD_MODIFICATIONS.length; i++) {
var opt = Triad.CHORD_MODIFICATIONS[i];
var el = document.createElement("option");
el.textContent = opt;
el.value = opt;
selectChordModification.appendChild(el);
}
$(".selectChordModification").value = modification;
api.setNoteClickingDisabled(isDisabled);
// Update the fretboard
updateFretboard(api, root, modification, tuning);
})(jQuery);
</script>
</body>
</html>