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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,20 +1,49 @@ | ||
| export default function navbar () { | ||
| // Get all "navbar-burger" elements | ||
| const $navbarBurgers = Array.prototype.slice.call(document.querySelectorAll('.navbar-burger'), 0) | ||
| const html = document.getElementsByTagName('html')[0] | ||
| const navbar = document.getElementById('navbar') | ||
| const htmlStickyClasses = ['has-navbar-fixed-top'] | ||
| const navbarStickyClasses = ['is-fixed-top', 'has-shadow'] | ||
|
|
||
| // Check if there are any navbar burgers | ||
| if ($navbarBurgers.length > 0) { | ||
| // Add a click event on each of them | ||
| $navbarBurgers.forEach(el => { | ||
| el.addEventListener('click', () => { | ||
| // Get the target from the "data-target" attribute | ||
| const target = el.dataset.target | ||
| const $target = document.getElementById(target) | ||
| let lastScrollY = 0 | ||
| let state = { | ||
| stickyBarEnabled: true, | ||
| stickyBarVisible: true | ||
| } | ||
|
|
||
| function updateState (stateChanges) { | ||
| const newState = { ...state, ...stateChanges } | ||
| if (JSON.stringify(newState) !== JSON.stringify(state)) { | ||
| state = newState | ||
| update() | ||
| } | ||
| } | ||
|
|
||
| // Toggle the "is-active" class on both the "navbar-burger" and the "navbar-menu" | ||
| el.classList.toggle('is-active') | ||
| $target.classList.toggle('is-active') | ||
| }) | ||
| }) | ||
| function update () { | ||
| if (state.stickyBarEnabled && state.stickyBarVisible) { | ||
| for (const className of htmlStickyClasses) { | ||
| html.classList.add(className) | ||
| } | ||
| for (const className of navbarStickyClasses) { | ||
| navbar.classList.add(className) | ||
| } | ||
| } else { | ||
| for (const className of htmlStickyClasses) { | ||
| html.classList.remove(className) | ||
| } | ||
| for (const className of navbarStickyClasses) { | ||
| navbar.classList.remove(className) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| const mobileMq = window.matchMedia('screen and (max-width: 768px)') | ||
| mobileMq.addEventListener('change', (e) => { | ||
| updateState({ stickyBarEnabled: e.matches }) | ||
| }) | ||
|
|
||
| window.addEventListener('scroll', (e) => { | ||
| const isScrollingUp = window.scrollY < lastScrollY | ||
| updateState({ stickyBarVisible: isScrollingUp }) | ||
| lastScrollY = window.scrollY | ||
| }) | ||
| } |
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