react-orchestra
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A toolbox to build interactive and smart instruments on the web and mobile.
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<title>JSDoc: Source: helpers/getInterval.js</title>
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<h1 class="page-title">Source: helpers/getInterval.js</h1>
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<pre class="prettyprint source linenums"><code>/* mod */
import NOTES from '../constants/NOTES';
/**
* @function
* @name getInterval
* @param {string} noteNameOne - Without octave
* @param {string} noteNameTwo - Without octave
* @example
* getInterval('A', 'B') // returns 1
* @return {string} noteName - Note name
*/
const getInterval = (noteOne = 'A', noteTwo = 'B') => {
const noteOneIndex = NOTES.indexOf(noteOne);
const noteTwoIndex = NOTES.indexOf(noteTwo);
if (noteTwoIndex < noteOneIndex) {
return 12 + (noteTwoIndex - noteOneIndex);
}
return noteTwoIndex - noteOneIndex;
};
export default getInterval;
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<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="Instrument.html">Instrument</a></li><li><a href="Note.html">Note</a></li></ul><h3>Global</h3><ul><li><a href="global.html#addOctaveToNoteName">addOctaveToNoteName</a></li><li><a href="global.html#getInterval">getInterval</a></li><li><a href="global.html#getIntervalPermutationsFromNoteNames">getIntervalPermutationsFromNoteNames</a></li><li><a href="global.html#getJSONFromMidiURL">getJSONFromMidiURL</a></li><li><a href="global.html#getNoteNamesFromChordName">getNoteNamesFromChordName</a></li><li><a href="global.html#getNoteNamesFromIntervals">getNoteNamesFromIntervals</a></li><li><a href="global.html#getScaleNotes">getScaleNotes</a></li><li><a href="global.html#getScalesFromNoteNames">getScalesFromNoteNames</a></li><li><a href="global.html#getTracksAndMetaFromParsedMidi">getTracksAndMetaFromParsedMidi</a></li><li><a href="global.html#getTracksAndMetaFromUrl">getTracksAndMetaFromUrl</a></li><li><a href="global.html#getUniqueNoteNames">getUniqueNoteNames</a></li><li><a href="global.html#getUniqueNoteNamesNoOctave">getUniqueNoteNamesNoOctave</a></li><li><a href="global.html#isInHigherOctave">isInHigherOctave</a></li><li><a href="global.html#removeOctaveFromNoteName">removeOctaveFromNoteName</a></li><li><a href="global.html#reOrderNotes">reOrderNotes</a></li><li><a href="global.html#updateTempo">updateTempo</a></li></ul>
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.4.3</a> on Sun Nov 20 2016 16:43:09 GMT+0200 (EET)
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