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ChordChartJS Code Climate

A JavaScript library for parsing and formatting chord sheets

Contents

Installation

ChordSheetJS is on npm, to install run:

npm install chordsheetjs

Load with import:

import ChordSheetJS from 'chordsheetjs';

or require():

var ChordSheetJS = require('chordsheetjs').default;

How to ...?

Parse chord sheet

Regular chord sheets

const chordSheet = `
       Am         C/G        F          C
Let it be, let it be, let it be, let it be
C                G              F  C/E Dm C
Whisper words of wisdom, let it be`.substring(1);

const parser = new ChordSheetJS.ChordSheetParser();
const song = parser.parse(chordSheet);

Ultimate Guitar chord sheets

const chordSheet = `
[Chorus]
       Am         C/G        F          C
Let it be, let it be, let it be, let it be
C                G              F  C/E Dm C
Whisper words of wisdom, let it be`.substring(1);

const parser = new ChordSheetJS.UltimateGuitarParser();
const song = parser.parse(chordSheet);

Chord pro format

const chordSheet = `
{title: Let it be}
{subtitle: ChordSheetJS example version}
{Chorus}

Let it [Am]be, let it [C/G]be, let it [F]be, let it [C]be
[C]Whisper words of [G]wisdom, let it [F]be [C/E] [Dm] [C]`.substring(1);

const parser = new ChordSheetJS.ChordProParser();
const song = parser.parse(chordSheet);

Display a parsed sheet

Plain text format

const formatter = new ChordSheetJS.TextFormatter();
const disp = formatter.format(song);

HTML format

Table-based layout
const formatter = new ChordSheetJS.HtmlTableFormatter();
const disp = formatter.format(song);
Div-based layout
const formatter = new ChordSheetJS.HtmlDivFormatter();
const disp = formatter.format(song);

Chord pro format

const formatter = new ChordSheetJS.ChordProFormatter();
const disp = formatter.format(song);

Serialize/deserialize

Chord sheets (Songs) can be serialized to plain JavaScript objects, which can be converted to JSON, XML etc by third-party libraries. The serialized object can also be deserialized back into a Song.

const serializedSong = new ChordSheetSerializer().serialize(song);
const deserialized = new ChordSheetSerializer().deserialize(serializedSong);

Add styling

The HTML formatters (HtmlTableFormatter and HtmlDivFormatter) can provide basic CSS to help with styling the output:

HtmlTableFormatter.cssString();
// .paragraph {
//   margin-bottom: 1em;
// }

HtmlTableFormatter.cssString('.chordSheetViewer');
// .chordSheetViewer .paragraph {
//   margin-bottom: 1em;
// }

HtmlTableFormatter.cssObject();
// '.paragraph': {
//   marginBottom: '1em'
// }

Parsing and modifying chords

import { parseChord } from 'chordsheetjs';

Parse

const chord = parseChord('Ebsus4/Bb');

Parse numeric chords (Nashville system):

const chord = parseChord('b1sus4/#3');

Display with #toString

Use #toString() to convert the chord to a chord string (eg Dsus/F#)

const chord = parseChord('Ebsus4/Bb');
chord.toString(); // --> "Ebsus4/Bb"

Clone

var chord2 = chord.clone();

Normalize

Normalizes keys B#, E#, Cb and Fb to C, F, B and E

const chord = parseChord('E#/B#'),
normalizedChord = chord.normalize();
normalizedChord.toString(); // --> "F/C"

Switch modifier

Convert # to b and vice versa

const chord = parseChord('Eb/Bb');
const chord2 = chord.switchModifier();
chord2.toString(); // --> "D#/A#"

Use specific modifier

Set the chord to a specific modifier (# or b)

const chord = parseChord('Eb/Bb');
const chord2 = chord.useModifier('#');
chord2.toString(); // --> "D#/A#"
const chord = parseChord('Eb/Bb');
const chord2 = chord.useModifier('b');
chord2.toString(); // --> "Eb/Bb"

Transpose up

const chord = parseChord('Eb/Bb');
const chord2 = chord.transposeUp();
chord2.toString(); // -> "E/B"

Transpose down

const chord = parseChord('Eb/Bb');
const chord2 = chord.transposeDown();
chord2.toString(); // -> "D/A"

Transpose

const chord = parseChord('C/E');
const chord2 = chord.transpose(4);
chord2.toString(); // -> "E/G#"
const chord = parseChord('C/E');
const chord2 = chord.transpose(-4);
chord2.toString(); // -> "Ab/C"

Convert numeric chord to chord symbol

const numericChord = parseChord('2/4');
const chordSymbol = toChordSymbol(numericChord, 'E');
chordSymbol.toString(); // -> "F#m/A"

Supported ChordPro directives

✔️ = supported

🕑 = will be supported in a future version

✖️ = currently no plans to support it in the near future

Meta-data directives

Directive Support
title (short: t) ✔️
subtitle ✔️
artist ✔️
composer ✔️
lyricist ✔️
copyright ✔️
album ✔️
year ✔️
key ✔️
time ✔️
tempo ✔️
duration ✔️
capo ✔️
meta ✔️

Formatting directives

Directive Support
comment (short: c) ✔️
comment_italic (short: ci) ✖️
comment_box (short: cb) ✖️
chorus ✖️
image ✖️

Environment directives

Directive Support
start_of_chorus (short: soc) ✔️
end_of_chorus (short: eoc) ✔️
start_of_verse ✔️
end_of_verse ✔️
start_of_tab (short: sot) ✖️
end_of_tab (short: eot) ✖️
start_of_grid ✖️
end_of_grid ✖️

Chord diagrams

Directive Support
define ✖️
chord ✖️

Fonts, sizes and colours

Directive Support
textfont 🕑
textsize 🕑
textcolour 🕑
chordfont 🕑
chordsize 🕑
chordcolour 🕑
tabfont ✖️
tabsize ✖️
tabcolour ✖️

Output related directives

Directive Support
new_page (short: np) ✖️
new_physical_page (short: npp) ✖️
column_break (short: cb) ✖️
grid (short: g) ✖️
no_grid (short: ng) ✖️
titles ✖️
columns (short: col) ✖️

Custom extensions

Directive Support
x_ ✔️

API docs

Note: all classes, methods and constants that are documented here can be considered public API and will only be subject to breaking changes between major versions.

Classes

ChordLyricsPair

Represents a chord with the corresponding (partial) lyrics

Comment

Represents a comment. See https://www.chordpro.org/chordpro/chordpro-file-format-specification/#overview

Metadata

Stores song metadata. Properties can be accessed using the get() method:

const metadata = new Metadata({ author: 'John' }); metadata.get('author') // => 'John'

See [get](#Metadata+get)

Paragraph

Represents a paragraph of lines in a chord sheet

Song

Represents a song in a chord sheet. Currently a chord sheet can only have one song.

Tag

Represents a tag/directive. See https://www.chordpro.org/chordpro/chordpro-directives/

ChordProFormatter

Formats a song into a ChordPro chord sheet

Formatter

Base class for all formatters, taking care of receiving a configuration wrapping that inside a Configuration object

HtmlDivFormatter

Formats a song into HTML. It uses DIVs to align lyrics with chords, which makes it useful for responsive web pages.

HtmlFormatter

Acts as a base class for HTML formatters, taking care of whitelisting prototype property access.

HtmlTableFormatter

Formats a song into HTML. It uses TABLEs to align lyrics with chords, which makes the HTML for things like PDF conversion.

TextFormatter

Formats a song into a plain text chord sheet

ChordProParser

Parses a ChordPro chord sheet

ChordSheetParser

Parses a normal chord sheet

ParserWarning

Represents a parser warning, currently only used by ChordProParser.

UltimateGuitarParser

Parses an Ultimate Guitar chord sheet with metadata Inherits from [ChordSheetParser](#ChordSheetParser)

Chord

Represents a Chord, consisting of a root, suffix (quality) and bass

ChordSheetSerializer

Serializes a song into een plain object, and deserializes the serialized object back into a [Song](#Song)

Members

ALBUM : string

Artist meta directive. See https://www.chordpro.org/chordpro/directives-artist/

ARTIST : string

Capo meta directive. See https://www.chordpro.org/chordpro/directives-capo/

CAPO : string

Comment directive. See https://www.chordpro.org/chordpro/directives-comment/

COMMENT : string

Composer meta directive. See https://www.chordpro.org/chordpro/directives-composer/

COMPOSER : string

Copyright meta directive. See https://www.chordpro.org/chordpro/directives-copyright/

COPYRIGHT : string

Duration meta directive. See https://www.chordpro.org/chordpro/directives-duration/

DURATION : string

End of chorus directive. See https://www.chordpro.org/chordpro/directives-env_chorus/

END_OF_CHORUS : string

End of tab directive. See https://www.chordpro.org/chordpro/directives-env_tab/

END_OF_TAB : string

End of verse directive. See https://www.chordpro.org/chordpro/directives-env_verse/

END_OF_VERSE : string

Key meta directive. See https://www.chordpro.org/chordpro/directives-key/

KEY : string

Key meta directive. See https://www.chordpro.org/chordpro/directives-key/

_KEY : string

Lyricist meta directive. See https://www.chordpro.org/chordpro/directives-lyricist/

LYRICIST : string

Start of chorus directive. See https://www.chordpro.org/chordpro/directives-env_chorus/

START_OF_CHORUS : string

Start of tab directive. See https://www.chordpro.org/chordpro/directives-env_tab/

START_OF_TAB : string

Start of verse directive. See https://www.chordpro.org/chordpro/directives-env_verse/

START_OF_VERSE : string

Subtitle meta directive. See https://www.chordpro.org/chordpro/directives-subtitle/

SUBTITLE : string

Tempo meta directive. See https://www.chordpro.org/chordpro/directives-tempo/

TEMPO : string

Time meta directive. See https://www.chordpro.org/chordpro/directives-time/

TIME : string

Title meta directive. See https://www.chordpro.org/chordpro/directives-title/

TITLE : string

Transpose meta directive. See: https://www.chordpro.org/chordpro/directives-transpose/

TRANSPOSE : string

New Key meta directive. See: bettermusic#53

NEW_KEY : string

Year meta directive. See https://www.chordpro.org/chordpro/directives-year/

defaultCssstring

Generates basic CSS, scoped within the provided selector, to use with output generated by [HtmlTableFormatter](#HtmlTableFormatter)

Constants

defaultCss : Object.<string, Object.<string, string>>

Basic CSS, in object style à la useStyles, to use with output generated by {@link }HtmlTableFormatter} For a CSS string see [scopedCss](scopedCss)

VERSE : string

Used to mark a paragraph as verse

VERSE : string

Used to mark a paragraph as chorus

CHORUS : string

Used to mark a paragraph as not containing a line marked with a type

NONE : string

Used to mark a paragraph as containing lines with both verse and chorus type

INDETERMINATE : string

Used to mark a paragraph as tab

Functions

parseChord(chordString)null | Chord

Tries to parse a chord string into a chord

getCapos(key)Object.<string, string>

Returns applicable capos for the provided key

getKeys(key)Array.<string>

Returns applicable keys to transpose to from the provided key

ChordLyricsPair

Represents a chord with the corresponding (partial) lyrics

Kind: global class

new ChordLyricsPair(chords, lyrics)

Initialises a ChordLyricsPair

Param Type Description
chords string

The chords

lyrics string

The lyrics

chordLyricsPair.chords : string

The chords

Kind: instance property of ChordLyricsPair

chordLyricsPair.lyrics : string

The lyrics

Kind: instance property of ChordLyricsPair

chordLyricsPair.isRenderable() ⇒ boolean

Indicates whether a ChordLyricsPair should be visible in a formatted chord sheet (except for ChordPro sheets)

Kind: instance method of ChordLyricsPair

chordLyricsPair.clone() ⇒ ChordLyricsPair

Returns a deep copy of the ChordLyricsPair, useful when programmatically transforming a song

Kind: instance method of ChordLyricsPair

Comment

Represents a comment. See https://www.chordpro.org/chordpro/chordpro-file-format-specification/#overview

Kind: global class

comment.isRenderable() ⇒ boolean

Indicates whether a Comment should be visible in a formatted chord sheet (except for ChordPro sheets)

Kind: instance method of Comment

comment.clone() ⇒ Comment

Returns a deep copy of the Comment, useful when programmatically transforming a song

Kind: instance method of Comment

Metadata

Stores song metadata. Properties can be accessed using the get() method:

const metadata = new Metadata({ author: 'John' }); metadata.get('author') // => 'John'

See [get](#Metadata+get)

Kind: global class

metadata.get(prop) ⇒ Array.<String> | String

Reads a metadata value by key. This method supports simple value lookup, as fetching single array values.

This method deprecates direct property access, eg: metadata['author']

Examples:

const metadata = new Metadata({ lyricist: 'Pete', author: ['John', 'Mary'] }); metadata.get('lyricist') // => 'Pete' metadata.get('author') // => ['John', 'Mary'] metadata.get('author.1') // => 'John' metadata.get('author.2') // => 'Mary'

Using a negative index will start counting at the end of the list:

const metadata = new Metadata({ lyricist: 'Pete', author: ['John', 'Mary'] }); metadata.get('author.-1') // => 'Mary' metadata.get('author.-2') // => 'John'

Kind: instance method of Metadata
Returns: Array.<String> | String -

the metadata value(s). If there is only one value, it will return a String, else it returns an array of strings.

Param Description
prop

the property name

metadata.clone() ⇒ Metadata

Returns a deep clone of this Metadata object

Kind: instance method of Metadata
Returns: Metadata -

the cloned Metadata object


Paragraph

Represents a paragraph of lines in a chord sheet

Kind: global class

paragraph.type ⇒ string

Tries to determine the common type for all lines. If the types for all lines are equal, it returns that type. If not, it returns [INDETERMINATE](#INDETERMINATE)

Kind: instance property of Paragraph

paragraph.hasRenderableItems() ⇒ boolean

Indicates whether the paragraph contains lines with renderable items.

Kind: instance method of Paragraph
See: Line.hasRenderableItems

Song

Represents a song in a chord sheet. Currently a chord sheet can only have one song.

Kind: global class

new Song(metadata)

Creates a new {Song} instance

Param Type Description
metadata Object | Metadata

predefined metadata

song.bodyLines ⇒ Array.<Line>

Returns the song lines, skipping the leading empty lines (empty as in not rendering any content). This is useful if you want to skip the "header lines": the lines that only contain meta data.

Kind: instance property of Song
Returns: Array.<Line> -

The song body lines


song.bodyParagraphs ⇒ Array.<Paragraph>

Returns the song paragraphs, skipping the paragraphs that only contain empty lines (empty as in not rendering any content)

Kind: instance property of Song
See: bodyLines

song.metaData ⇒

Deprecated

The song's metadata. Please use [metadata](metadata) instead.

Kind: instance property of Song
Returns:

Metadata The metadata


song.clone() ⇒ Song

Returns a deep clone of the song

Kind: instance method of Song
Returns: Song -

The cloned song


song.setCapo(capo) ⇒ Song

Returns a copy of the song with the capo value set to the specified capo. It changes:

  • the value for capo in the metadata set
  • any existing capo directive)

Kind: instance method of Song
Returns: Song -

The changed song

Param Type Description
capo number | null

the capo. Passing null will:

  • remove the current key from metadata
  • remove any capo directive

song.setKey(key) ⇒ Song

Returns a copy of the song with the key set to the specified key. It changes:

  • the value for key in the metadata set
  • any existing key directive
  • all chords, those are transposed according to the distance between the current and the new key

Kind: instance method of Song
Returns: Song -

The changed song

Param Type Description
key string

The new key.

Tag

Represents a tag/directive. See https://www.chordpro.org/chordpro/chordpro-directives/

Kind: global class

tag.name : string

The tag full name. When the original tag used the short name, name will return the full name.

Kind: instance property of Tag

tag.originalName : string

The original tag name that was used to construct the tag.

Kind: instance property of Tag

tag.value : string | null

The tag value

Kind: instance property of Tag

tag.hasValue() ⇒ boolean

Checks whether the tag value is a non-empty string.

Kind: instance method of Tag

tag.isRenderable() ⇒ boolean

Checks whether the tag is usually rendered inline. It currently only applies to comment tags.

Kind: instance method of Tag

tag.isMetaTag() ⇒ boolean

Checks whether the tag is either a standard meta tag or a custom meta directive ({x_some_name})

Kind: instance method of Tag

tag.clone() ⇒ Tag

Returns a clone of the tag.

Kind: instance method of Tag
Returns: Tag -

The cloned tag


ChordProFormatter

Formats a song into a ChordPro chord sheet

Kind: global class

chordProFormatter.format(song) ⇒ string

Formats a song into a ChordPro chord sheet.

Kind: instance method of ChordProFormatter
Returns: string -

The ChordPro string

Param Type Description
song Song

The song to be formatted

Formatter

Base class for all formatters, taking care of receiving a configuration wrapping that inside a Configuration object

Kind: global class

new Formatter([configuration])

Instantiate

Param Type Default Description
[configuration] Object {}

options

[configuration.evaluate] boolean false

Whether or not to evaluate meta expressions. For more info about meta expressions, see: https://bit.ly/2SC9c2u

[configuration.metadata] object {}
[configuration.metadata.separator] string "&quot;, &quot;"

The separator to be used when rendering a metadata value that has multiple values. See: https://bit.ly/2SC9c2u

HtmlDivFormatter

Formats a song into HTML. It uses DIVs to align lyrics with chords, which makes it useful for responsive web pages.

Kind: global class

htmlDivFormatter.format(song) ⇒ string

Formats a song into HTML.

Kind: instance method of HtmlDivFormatter
Returns: string -

The HTML string

Param Type Description
song Song

The song to be formatted

HtmlDivFormatter.cssString(scope) ⇒ string

Generates basic CSS, optionally scoped within the provided selector, to use with output generated by [HtmlDivFormatter](#HtmlDivFormatter)

For example, execute cssString('.chordSheetViewer') will result in CSS like:

.chordSheetViewer .paragraph {
  margin-bottom: 1em;
}

Kind: static method of HtmlDivFormatter
Returns: string -

the CSS string

Param Description
scope

the CSS scope to use, for example .chordSheetViewer

HtmlDivFormatter.cssObject() ⇒ Object.<string, Object.<string, string>>

Basic CSS, in object style à la useStyles, to use with output generated by [HtmlDivFormatter](#HtmlDivFormatter)

Example:

'.paragraph': {
  marginBottom: '1em'
}

For a CSS string see [cssString](cssString)

Kind: static method of HtmlDivFormatter
Returns: Object.<string, Object.<string, string>> -

the CSS object


HtmlFormatter

Acts as a base class for HTML formatters, taking care of whitelisting prototype property access.

Kind: global class

HtmlTableFormatter

Formats a song into HTML. It uses TABLEs to align lyrics with chords, which makes the HTML for things like PDF conversion.

Kind: global class

htmlTableFormatter.format(song) ⇒ string

Formats a song into HTML.

Kind: instance method of HtmlTableFormatter
Returns: string -

The HTML string

Param Type Description
song Song

The song to be formatted

HtmlTableFormatter.cssString(scope) ⇒ string

Generates basic CSS, optionally scoped within the provided selector, to use with output generated by [HtmlTableFormatter](#HtmlTableFormatter)

For example, execute cssString('.chordSheetViewer') will result in CSS like:

.chordSheetViewer .paragraph {
  margin-bottom: 1em;
}

Kind: static method of HtmlTableFormatter
Returns: string -

the CSS string

Param Description
scope

the CSS scope to use, for example .chordSheetViewer

HtmlTableFormatter.cssObject() ⇒ Object.<string, Object.<string, string>>

Basic CSS, in object style à la useStyles, to use with output generated by [HtmlTableFormatter](#HtmlTableFormatter) For a CSS string see [cssString](cssString)

Example:

'.paragraph': {
  marginBottom: '1em'
}

Kind: static method of HtmlTableFormatter
Returns: Object.<string, Object.<string, string>> -

the CSS object


TextFormatter

Formats a song into a plain text chord sheet

Kind: global class

textFormatter.format(song) ⇒ string

Formats a song into a plain text chord sheet

Kind: instance method of TextFormatter
Returns: string -

the chord sheet

Param Type Description
song Song

The song to be formatted

ChordProParser

Parses a ChordPro chord sheet

Kind: global class

chordProParser.warnings : Array.<ParserWarning>

All warnings raised during parsing the ChordPro chord sheet

Kind: instance property of ChordProParser

chordProParser.parse(chordProChordSheet) ⇒ Song

Parses a ChordPro chord sheet into a song

Kind: instance method of ChordProParser
Returns: Song -

The parsed song

Param Type Description
chordProChordSheet string

the ChordPro chord sheet

ChordSheetParser

Parses a normal chord sheet

Kind: global class

new ChordSheetParser([options])

Instantiate a chord sheet parser

Param Type Default Description
[options] Object {}

options

[options.preserveWhitespace] boolean true

whether to preserve trailing whitespace for chords

chordSheetParser.parse(chordSheet, [options]) ⇒ Song

Parses a chord sheet into a song

Kind: instance method of ChordSheetParser
Returns: Song -

The parsed song

Param Type Default Description
chordSheet string

The ChordPro chord sheet

[options] Object {}

Optional parser options

[options.song] Song

The Song to store the song data in

ParserWarning

Represents a parser warning, currently only used by ChordProParser.

Kind: global class

parserWarning.toString() ⇒ string

Returns a stringified version of the warning

Kind: instance method of ParserWarning
Returns: string -

The string warning


UltimateGuitarParser

Parses an Ultimate Guitar chord sheet with metadata Inherits from [ChordSheetParser](#ChordSheetParser)

Kind: global class

Chord

Represents a Chord, consisting of a root, suffix (quality) and bass

Kind: global class

chord.clone() ⇒ Chord

Returns a deep copy of the chord

Kind: instance method of Chord

chord.toChordSymbol([key]) ⇒ Chord

Converts the chord to a chord symbol, using the supplied key as a reference. For example, a numeric chord #4 with reference key E will return the chord symbol A#. When the chord is already a chord symbol, it will return a clone of the object.

Kind: instance method of Chord
Returns: Chord -

the chord symbol

Param Type Default Description
[key] Key | string

the reference key

chord.toChordSymbolString([key]) ⇒ string

Converts the chord to a chord symbol string, using the supplied key as a reference. For example, a numeric chord #4 with reference key E will return the chord symbol A#. When the chord is already a chord symbol, it will return a string version of the chord.

Kind: instance method of Chord
Returns: string -

the chord symbol string


See: {toChordSymbol}

Param Type Default Description
[key] Key | string

the reference key

chord.isChordSymbol() ⇒ boolean

Determines whether the chord is a chord symbol

Kind: instance method of Chord

chord.toNumeric([key]) ⇒ Chord

Converts the chord to a numeric chord, using the supplied key as a reference. For example, a chord symbol A# with reference key E will return the numeric chord #4.

Kind: instance method of Chord
Returns: Chord -

the numeric chord

Param Type Default Description
[key] Key | string

the reference key

chord.toNumeral(key) ⇒ Chord

Converts the chord to a numeral chord, using the supplied key as a reference. For example, a chord symbol A# with reference key E will return the numeral chord #IV.

Kind: instance method of Chord
Returns: Chord -

the numeral chord

Param Type Default Description
key Key | string | null

the reference key. The key is required when converting a chord symbol

chord.toNumeralString([key]) ⇒ string

Converts the chord to a numeral chord string, using the supplied kye as a reference. For example, a chord symbol A# with reference key E will return the numeral chord #4.

Kind: instance method of Chord
Returns: string -

the numeral chord string


See: {toNumeral}

Param Type Default Description
[key] Key | string

the reference key

chord.isNumeric() ⇒ boolean

Determines whether the chord is numeric

Kind: instance method of Chord

chord.toNumericString([key]) ⇒ string

Converts the chord to a numeric chord string, using the supplied kye as a reference. For example, a chord symbol A# with reference key E will return the numeric chord #4.

Kind: instance method of Chord
Returns: string -

the numeric chord string


See: {toNumeric}

Param Type Default Description
[key] Key | string

the reference key

chord.isNumeral() ⇒ boolean

Determines whether the chord is a numeral

Kind: instance method of Chord

chord.toString() ⇒ string

Converts the chord to a string, eg Esus4/G# or 1sus4/#3

Kind: instance method of Chord
Returns: string -

the chord string


chord.normalize() ⇒ Chord

Normalizes the chord root and bass notes:

  • Fb becomes E
  • Cb becomes B
  • B# becomes C
  • E# becomes F
  • 4b becomes 3
  • 1b becomes 7
  • 7# becomes 1
  • 3# becomes 4

Besides that it normalizes the suffix. For example, sus2 becomes 2, sus4 becomes sus. All suffix normalizations can be found in src/normalize_mappings/suffix-mapping.txt.

Kind: instance method of Chord
Returns: Chord -

the normalized chord


chord.useModifier(newModifier) ⇒ Chord

Switches to the specified modifier

Kind: instance method of Chord
Returns: Chord -

the new, changed chord

Param Description
newModifier

the modifier to use: '#' or 'b'

chord.transposeUp() ⇒ Chord

Transposes the chord up by 1 semitone. Eg. A becomes A#, Eb becomes E

Kind: instance method of Chord
Returns: Chord -

the new, transposed chord


chord.transposeDown() ⇒ Chord

Transposes the chord down by 1 semitone. Eg. A# becomes A, E becomes Eb

Kind: instance method of Chord
Returns: Chord -

the new, transposed chord


chord.transpose(delta) ⇒ Chord

Transposes the chord by the specified number of semitones

Kind: instance method of Chord
Returns: Chord -

the new, transposed chord

Param Description
delta

de number of semitones

Chord.parse(chordString) ⇒ null | Chord

Tries to parse a chord string into a chord

Kind: static method of Chord

Param Description
chordString

the chord string, eg Esus4/G# or 1sus4/#3

ChordSheetSerializer

Serializes a song into een plain object, and deserializes the serialized object back into a [Song](#Song)

Kind: global class

chordSheetSerializer.serialize() ⇒

Serializes the chord sheet to a plain object, which can be converted to any format like JSON, XML etc Can be deserialized using [deserialize](deserialize)

Kind: instance method of ChordSheetSerializer
Returns:

object A plain JS object containing all chord sheet data


chordSheetSerializer.deserialize(serializedSong) ⇒ Song

Deserializes a song that has been serialized using [serialize](serialize)

Kind: instance method of ChordSheetSerializer
Returns: Song -

The deserialized song

Param Type Description
serializedSong object

The serialized song

ALBUM : string

Artist meta directive. See https://www.chordpro.org/chordpro/directives-artist/

Kind: global variable

ARTIST : string

Capo meta directive. See https://www.chordpro.org/chordpro/directives-capo/

Kind: global variable

CAPO : string

Comment directive. See https://www.chordpro.org/chordpro/directives-comment/

Kind: global variable

COMMENT : string

Composer meta directive. See https://www.chordpro.org/chordpro/directives-composer/

Kind: global variable

COMPOSER : string

Copyright meta directive. See https://www.chordpro.org/chordpro/directives-copyright/

Kind: global variable

COPYRIGHT : string

Duration meta directive. See https://www.chordpro.org/chordpro/directives-duration/

Kind: global variable

DURATION : string

End of chorus directive. See https://www.chordpro.org/chordpro/directives-env_chorus/

Kind: global variable

END_OF_CHORUS : string

End of tab directive. See https://www.chordpro.org/chordpro/directives-env_tab/

Kind: global variable

END_OF_TAB : string

End of verse directive. See https://www.chordpro.org/chordpro/directives-env_verse/

Kind: global variable

END_OF_VERSE : string

Key meta directive. See https://www.chordpro.org/chordpro/directives-key/

Kind: global variable

KEY : string

Key meta directive. See https://www.chordpro.org/chordpro/directives-key/

Kind: global variable

_KEY : string

Lyricist meta directive. See https://www.chordpro.org/chordpro/directives-lyricist/

Kind: global variable

LYRICIST : string

Start of chorus directive. See https://www.chordpro.org/chordpro/directives-env_chorus/

Kind: global variable

START_OF_CHORUS : string

Start of tab directive. See https://www.chordpro.org/chordpro/directives-env_tab/

Kind: global variable

START_OF_TAB : string

Start of verse directive. See https://www.chordpro.org/chordpro/directives-env_verse/

Kind: global variable

START_OF_VERSE : string

Subtitle meta directive. See https://www.chordpro.org/chordpro/directives-subtitle/

Kind: global variable

SUBTITLE : string

Tempo meta directive. See https://www.chordpro.org/chordpro/directives-tempo/

Kind: global variable

TEMPO : string

Time meta directive. See https://www.chordpro.org/chordpro/directives-time/

Kind: global variable

TIME : string

Title meta directive. See https://www.chordpro.org/chordpro/directives-title/

Kind: global variable

TITLE : string

Transpose meta directive. See: https://www.chordpro.org/chordpro/directives-transpose/

Kind: global variable

TRANSPOSE : string

New Key meta directive. See: bettermusic#53

Kind: global variable

NEW_KEY : string

Year meta directive. See https://www.chordpro.org/chordpro/directives-year/

Kind: global variable

defaultCss ⇒ string

Generates basic CSS, scoped within the provided selector, to use with output generated by [HtmlTableFormatter](#HtmlTableFormatter)

Kind: global variable
Returns: string -

the CSS string

Param Description
scope

the CSS scope to use, for example .chordSheetViewer

defaultCss : Object.<string, Object.<string, string>>

Basic CSS, in object style à la useStyles, to use with output generated by {@link }HtmlTableFormatter} For a CSS string see [scopedCss](scopedCss)

Kind: global constant

VERSE : string

Used to mark a paragraph as verse

Kind: global constant

VERSE : string

Used to mark a paragraph as chorus

Kind: global constant

CHORUS : string

Used to mark a paragraph as not containing a line marked with a type

Kind: global constant

NONE : string

Used to mark a paragraph as containing lines with both verse and chorus type

Kind: global constant

INDETERMINATE : string

Used to mark a paragraph as tab

Kind: global constant

parseChord(chordString) ⇒ null | Chord

Deprecated

Tries to parse a chord string into a chord

Kind: global function

Param Description
chordString

the chord string, eg Esus4/G# or 1sus4/#3

getCapos(key) ⇒ Object.<string, string>

Returns applicable capos for the provided key

Kind: global function
Returns: Object.<string, string> -

The available capos, where the keys are capo numbers and the values are the effective key for that capo.

Param Type Description
key Key | string

The key to get capos for

getKeys(key) ⇒ Array.<string>

Returns applicable keys to transpose to from the provided key

Kind: global function
Returns: Array.<string> -

The available keys

Param Type Description
key Key | string

The key to get keys for