work.suroh.tk/_site/assets/js/interaction.js

import {Synth} from '/assets/js/synth.js'

// audio for events
// AUDIO SETUP
const audioEngine = new (window.AudioContext || window.webkitAudioContext)()
audioEngine.suspend()
const masterGain = audioEngine.createGain()
const audioEl = document.querySelector('#audioToggle')

masterGain.gain.value = 0.9
masterGain.connect(audioEngine.destination)

const audioToggle = () => {
  audioEl.classList.toggle('active');
  if (audioEngine.state == 'suspended') {
    console.log('resumed')
    audioEngine.resume()
  } else {
    audioEngine.suspend()
    console.log('suspended')
  }
}

const audioEnable = () => {
  
}

// audioEl.addEventListener('click', audioToggle)

// NAVIGATION
let primaryNav = document.querySelectorAll('nav>span')
let subNav = document.querySelector('nav#sub')
let menuItem = document.querySelector('#menuItem')

let menuVoices = []

for (let n of primaryNav) {
  n.nextSibling.parentNode.removeChild(n.nextSibling)

  menuVoices[n.dataset.link] = new Synth(audioEngine)
  menuVoices[n.dataset.link].gain.connect(masterGain)

  n.addEventListener('mouseenter', (e) => {
    console.log('mouse enter')
    if (audioEngine.state == 'suspended') {
      audioEngine.resume()
    }
  })

  n.addEventListener('click', (e) => {

    for (let _n of primaryNav) {
      if (n === _n && n.dataset.link != '~') {
        n.classList.toggle('active')
      } else if (n.dataset.link == '~') {
        window.location.href = '/'
      } else {
        _n.classList.remove('active')
      }
    }
    
    // subnav is nav element
    if (!subNav.classList.contains('active')) {
      subNav.classList.add('active')
    }

    for (let s of subNav.children) {
      if (s.id == n.dataset.link) {
        s.classList.add('active')
      } else {
        s.classList.remove('active')
      }
    }
  })

  n.addEventListener('mouseenter', () => {
    if (n.dataset.link == '~') {
      menuItem.textContent = '\u003C\u007E'
    } else {
      menuItem.textContent = n.dataset.link
    }
    menuItem.className = 'active'
    menuVoices[n.dataset.link].noteOn()
  })

  n.addEventListener('mouseout', () => {
    menuItem.className = 'inactive'
    menuVoices[n.dataset.link].noteOff()
  })


}