एक से ज़्यादा चुनें

इस पैटर्न में बताया गया है कि उपयोगकर्ता अनुभवों को क्रम से लगाने और फ़िल्टर करने के लिए, एक से ज़्यादा कॉम्पोनेंट को कैसे बनाया जाए. ये कॉम्पोनेंट, रिस्पॉन्सिव, आसान, और ऐक्सेस करने लायक होते हैं.

पूरा लेख · YouTube पर वीडियो · GitHub पर सोर्स

एचटीएमएल

<main>
  <header>
    <h1>Lighting</h1>
    <small>Find your perfect light</small>
  </header>
  <aside>
    <form>
      <select multiple="true" title="Filter results by category">
        <optgroup label="New">
          <option value="last 30 days">Last 30 Days</option>
          <option value="last 6 months">Last 6 Months</option>
        </optgroup>
        <optgroup label="Lamps">
          <option value="table lamps">Table Lamps</option>
          <option value="desk lamps">Desk Lamps</option>
          <option value="floor lamps">Floor Lamps</option>
        </optgroup>
        <optgroup label="Ceiling">
          <option value="chandeliers">Chandeliers</option>
          <option value="pendant">Pendant</option>
          <option value="flush">Flush</option>
          <option value="fans">Fans</option>
        </optgroup>
        <optgroup label="By Room">
          <option value="bedroom">Bedroom</option>
          <option value="dining room">Dining Room</option>
          <option value="kitchen">Kitchen</option>
          <option value="living room">Living Room</option>
          <option value="bathroom">Bathroom</option>
          <option value="entryway">Entryway</option>
          <option value="outdoor">Outdoor</option>
        </optgroup>
        <optgroup label="Kids">
          <option value="lamps">Lamps</option>
          <option value="night lights">Night Lights</option>
          <option value="ceiling">Ceiling</option>
        </optgroup>
      </select>
      
      <fieldset>
        <legend>New</legend>
        <div>
          <input type="checkbox" id="last-30-days" name="new" value="last 30 days">
          <label for="last-30-days">Last 30 Days</label>
        </div>
        <div>
          <input type="checkbox" id="last-6-months" name="new" value="last 6 months">
          <label for="last-6-months">Last 6 Months</label>
        </div>
      </fieldset>
      <fieldset>
        <legend>Lamps</legend>
        <div>
          <input type="checkbox" id="table-lamps" name="lamps" value="table lamps">
          <label for="table-lamps">Table Lamps</label>
        </div>
        <div>
          <input type="checkbox" id="desk-lamps" name="lamps" value="desk lamps">
          <label for="desk-lamps">Desk Lamps</label>
        </div>
        <div>
          <input type="checkbox" id="floor-lamps" name="lamps" value="floor lamps">
          <label for="floor-lamps">Floor Lamps</label>
        </div>
      </fieldset>
      <fieldset>
        <legend>Ceiling</legend>
        <div>
          <input type="checkbox" id="chandeliers" name="ceiling" value="chandeliers">
          <label for="chandeliers">Chandeliers</label>
        </div>
        <div>
          <input type="checkbox" id="pendant" name="ceiling" value="pendant">
          <label for="pendant">Pendant</label>
        </div>
        <div>
          <input type="checkbox" id="flush" name="ceiling" value="flush">
          <label for="flush">Flush</label>
        </div>
        <div>
          <input type="checkbox" id="fans" name="ceiling" value="fans">
          <label for="fans">Fans</label>
        </div>
      </fieldset>
      <fieldset>
        <legend>By Room</legend>
        <div>
          <input type="checkbox" id="bedroom" name="by room" value="bedroom">
          <label for="bedroom">Bedroom</label>
        </div>
        <div>
          <input type="checkbox" id="dining-room" name="by room" value="dining room">
          <label for="dining-room">Dining Room</label>
        </div>
        <div>
          <input type="checkbox" id="kitchen" name="by room" value="kitchen">
          <label for="kitchen">Kitchen</label>
        </div>
        <div>
          <input type="checkbox" id="living-room" name="by room" value="living room">
          <label for="living-room">Living Room</label>
        </div>
        <div>
          <input type="checkbox" id="bathroom" name="by room" value="bathroom">
          <label for="bathroom">Bathroom</label>
        </div>
        <div>
          <input type="checkbox" id="entryway" name="by room" value="entryway">
          <label for="entryway">Entryway</label>
        </div>
        <div>
          <input type="checkbox" id="outdoor" name="by room" value="outdoor">
          <label for="outdoor">Outdoor</label>
        </div>
      </fieldset>
      <fieldset>
        <legend>Kids</legend>
        <div>
          <input type="checkbox" id="lamps" name="kids" value="lamps">
          <label for="lamps">Lamps</label>
        </div>
        <div>
          <input type="checkbox" id="night-lights" name="kids" value="night lights">
          <label for="night-lights">Night Lights</label>
        </div>
        <div>
          <input type="checkbox" id="ceiling" name="kids" value="ceiling">
          <label for="ceiling">Ceiling</label>
        </div>
      </fieldset>
    </form>
    <div role="status" class="sr-only" id="applied-filters"></div>
  </aside>
  <article>
    <span class="last-30-days table-lamps"></span>
    <span class="last-6-months desk-lamps"></span>
    <span class="floor-lamps"></span>
    <span class="last-6-months chandeliers"></span>
    <span class="pendant last-6-months"></span>
    <span class="flush fans"></span>
    <span class="fans pendant table-lamps"></span>
    <span class="bedroom"></span>
    <span class="dining-room last-30-days chandeliers"></span>
    <span class="kitchen lamps"></span>
    <span class="living-room"></span>
    <span class="bathroom living-room chandeliers desk-lamps"></span>
    <span class="bathroom table-lamps desk-lamps"></span>
    <span class="entryway last-30-days"></span>
    <span class="outdoor desk-lamps"></span>
    <span class="lamps last-30-days"></span>
    <span class="night-lights table-lamps"></span>
    <span class="ceiling last-30-days"></span>
    <span class="floor-lamps table-lamps"></span>
    <span class="floor-lamps last-6-months"></span>
    <span class="dining-room last-30-days chandeliers"></span>
    <span class="kitchen lamps"></span>
    <span class="living-room"></span>
    <span class="bathroom living-room chandeliers desk-lamps"></span>
  </article>
</main>

CSS


        main {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 5vmin;
  align-items: flex-start;

  & > header {
    grid-column: 1 / -1;
  }

  @media (orientation: portrait) {
    grid-template-columns: 1fr;
  }

  @media (--useSelect) {
    & > article {
      grid-row: 3;
      grid-column: 1 / -1;
    }
  }
}

article {
  --size: min(300px, calc(25% - 2ch));
  margin: -1ch;

  & > span {
    will-change: transform;
    background: hsl(0 0% 50% / 25%);
    border-radius: 10px;
    inline-size: var(--size);
    block-size: 15ch;
    margin: 1ch;

    @media (orientation: portrait) {
      --size: calc(50% - 2ch);
    }

    @supports (aspect-ratio: 1) {
      block-size: auto;
      aspect-ratio: 1;
    }
  }
}

header {
  display: grid;
  gap: 1ch;
}

aside {
  counter-reset: filters;

  & :checked {
    counter-increment: filters; 
  }

  & #applied-filters::before {
    content: counter(filters) " filters ";
  }
}

fieldset:first-of-type {
  margin-block-start: -5px;
}

[role="status"] {
  @media (--useSelect) {
    display: none;
  }
}

.sr-only {
  inline-size: 0;
  block-size: 0;
  overflow: hidden;
}

JS


        import 'https://unpkg.com/isotope-layout@3.0.6/dist/isotope.pkgd.min.js'

const IsotopeGrid = new Isotope( 'article', {
  itemSelector: 'span',
  layoutMode: 'fitRows',
  percentPosition: true
})
  
const filterGrid = query => {
  const { matches:motionOK } = window.matchMedia(
    '(prefers-reduced-motion: no-preference)'
  )
  
  IsotopeGrid.arrange({
    filter: query,
    stagger: 25,
    transitionDuration: motionOK ? '0.4s' : 0,
  })
}

// takes a  watcher
document.querySelector('select').addEventListener('input', e => {
  let selectData = prepareSelectOptions(e.target)
  console.warn('Multiselect', selectData)

  // DEMO
  // isotope query assembly from checkbox selections
  let query = selectData.reduce((query, val) => {
    query.push('.' + val[1].split(' ').join('-'))
    return query
  }, []).join(',')

  filterGrid(query)

  // update for assistive technology
  let statusRoleElement = document.querySelector('#applied-filters')
  let filterResults = IsotopeGrid.getFilteredItemElements().length

  statusRoleElement.style.counterSet = selectData.length
  statusRoleElement.textContent = " giving " + filterResults + " results"
})

document
  .querySelector('aside form')
  .addEventListener('input', e => {
    if (e.target.nodeName === 'SELECT') return
      
    const formData = new FormData(document.querySelector('form'))
    console.warn('Checkboxes', Array.from(formData.entries()))

    // DEMO
    // isotope query assembly from checkbox selections
    let query = Array.from(formData.values()).reduce((query, val) => {
      query.push('.' + val.split(' ').join('-'))
      return query
    }, []).join(',')

    filterGrid(query)

    document.querySelector('#applied-filters').textContent = " giving " + IsotopeGrid.getFilteredItemElements().length + " results"
  })