सिडेनाव

यह पैटर्न दिखाता है कि वेब के लिए ऐसा कॉम्पोनेंट कैसे बनाया जाए जो रिस्पॉन्सिव हो, स्टेट के साथ हो, कीबोर्ड नेविगेशन के साथ काम करता हो, JavaScript के साथ और उसके बिना काम करता हो, और सभी ब्राउज़र पर काम करता हो.

पूरा लेख · YouTube पर वीडियो · GitHub पर सोर्स

एचटीएमएल

<aside id="sidenav-open">
  <nav>
    <h4>My</h4>
    <a href="#">Dashboard</a>
    <a href="#">Profile</a>
    <a href="#">Preferences</a>
    <a href="#">Archive</a>

    <h4>Settings</h4>
    <a href="#">Accessibility</a>
    <a href="#">Theme</a>
    <a href="#">Admin</a>
  </nav>
  
  <!-- TODO: Devsite - Removed inline handlers -->
  <!-- <a href="#" id="sidenav-close" title="Close Menu" aria-label="Close Menu" onchange="history.go(-1)"></a> -->
</aside>

<main>
  <header>
    <a href="#sidenav-open" id="sidenav-button" class="hamburger" title="Open Menu" aria-label="Open Menu">
      <svg viewBox="0 0 50 40" role="presentation" focusable="false" aria-label="trigram for heaven symbol">
        <line x1="0" x2="100%" y1="10%" y2="10%" />
        <line x1="0" x2="100%" y1="50%" y2="50%" />
        <line x1="0" x2="100%" y1="90%" y2="90%" />
      </svg>
    </a>
    <h1>Site Title</h1>
  </header>

  <article>
    <h2>Totam Header</h2>
    <p>Lorem ipsum dolor, sit amet consectetur adipisicing elit. Cum consectetur, necessitatibus velit officia ut impedit veritatis temporibus soluta? Totam odit cupiditate facilis nisi sunt hic necessitatibus voluptatem nihil doloribus! Enim.</p>
    <p>Lorem ipsum dolor sit, amet consectetur adipisicing elit. Fugit rerum, amet odio explicabo voluptas eos cum libero, ex esse quasi optio incidunt soluta eligendi labore error corrupti! Dolore, cupiditate porro.</p>

    <h3>Subhead Totam Odit</h3>
    <p>Lorem ipsum dolor sit, amet consectetur adipisicing elit. Fugit rerum, amet odio explicabo voluptas eos cum libero, ex esse quasi optio incidunt soluta eligendi labore error corrupti! Dolore, cupiditate porro.</p>
    <p>Lorem ipsum dolor sit, amet consectetur adipisicing elit. Fugit rerum, amet odio explicabo voluptas eos cum libero, ex esse quasi optio incidunt soluta eligendi labore error corrupti! Dolore, cupiditate porro.</p>
    
    <h3>Subhead</h3>
    <p>Lorem ipsum dolor sit, amet consectetur adipisicing elit. Fugit rerum, amet odio explicabo voluptas eos cum libero, ex esse quasi optio incidunt soluta eligendi labore error corrupti! Dolore, cupiditate porro.</p>
    <p>Lorem ipsum dolor sit, amet consectetur adipisicing elit. Fugit rerum, amet odio explicabo voluptas eos cum libero, ex esse quasi optio incidunt soluta eligendi labore error corrupti! Dolore, cupiditate porro.</p>
  </article>
</main>

CSS

        body {
  display: grid;
  grid: [stack] 1fr / min-content [stack] 1fr;

  @media (max-width: 540px) {
    & > :matches(aside, main) {
      grid-area: stack;
    }
  }
}

#sidenav-open {
  --easeOutExpo: cubic-bezier(0.16, 1, 0.3, 1);
  --duration: .6s;

  display: grid;
  grid-template-columns: [nav] 2fr [escape] 1fr;

  @media (max-width: 540px) {
    position: sticky;
    top: 0;
    max-height: 100vh;
    overflow: hidden auto;
    overscroll-behavior: contain;

    visibility: hidden; /* not keyboard accessible when closed */
    transform: translateX(-110vw);
    will-change: transform;
    transition: 
      transform var(--duration) var(--easeOutExpo),
      visibility 0s linear var(--duration);
    
    &:target {
      visibility: visible;
      transform: translateX(0);
      transition: transform var(--duration) var(--easeOutExpo);
    }
  }

  @media (prefers-reduced-motion: reduce) {
    --duration: 1ms;
  }
}

#sidenav-button,
#sidenav-close {
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  user-select: none;
  touch-action: manipulation;

  @media (min-width: 540px) {
    display: none;
  }
}
        

JS

        const sidenav = document.querySelector('#sidenav-open')
const closenav = document.querySelector('#sidenav-close')
const opennav = document.querySelector('#sidenav-button')

// set focus to our open/close buttons after animation
sidenav.addEventListener('transitionend', e => {
  if (e.propertyName !== 'transform')
    return

  const isOpen = document.location.hash === '#sidenav-open'

  isOpen
    ? closenav.focus()
    : opennav.focus()

  if (!isOpen) {
    history.replaceState(history.state, '')
  }
})

// close our menu when esc is pressed
sidenav.addEventListener('keyup', e => {
  if (e.code === 'Escape')
    window.history.length
      ? window.history.back()
      : document.location.hash = ''
})