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主页 / 问题 / 1599068
Accepted
powerg
powerg
Asked:2024-11-07 07:12:07 +0000 UTC2024-11-07 07:12:07 +0000 UTC 2024-11-07 07:12:07 +0000 UTC

如何将 js 代码应用到您的块中?

  • 772

页面上有 2 个过滤器,请告诉我如何制作,以便过滤仅应用于您的块?

let blogItems = document.querySelectorAll('.filter-column');
if (blogItems.length > 0) {
    let blogFilters = document.querySelectorAll('.filter__title');
    if (blogFilters.length > 0) {
        for (let index = 0; index < blogFilters.length; index++) {
            const blogFilter = blogFilters[index];
            blogFilter.addEventListener("click", function (e) {
                e.preventDefault();
                const blogFilterValue = blogFilter.dataset.filter;
                const blogFilterActive = document.querySelector('.filter__title._active');
                blogFilter.classList.add('_active');

                showBlogItems(blogFilterValue);
            });
        }
        function showBlogItems(filter) {
            for (let index = 0; index < blogItems.length; index++) {
                const blogItem = blogItems[index];
                if (filter === 'all' || !filter) {
                    blogItem.classList.remove('_hide');
                    blogItem.classList.remove('_active');
                } else {
                    blogItem.classList.add('_hide');
                    blogItem.classList.remove('_active');
                    if (blogItem.classList.contains('filter__column_' + filter)) {
                        blogItem.classList.remove('_hide');
                        blogItem.classList.add('_active');
                    }
                }
            }
        }
    }
}
.filter-column._hide{
  display:none;
}
<div>
<nav class="filter__navigation">
  <button data-filter="all" type="button" class="filter__title _active">
    <span class="button"> Все результаты </span>
  </button>
  <button data-filter="article-1" type="button" class="filter__title">
    <span class="button">Статьи 1</span>
  </button>
  <button data-filter="article-2" type="button" class="filter__title">
    <span class="button">Статьи 2</span>
  </button>
  <button data-filter="article-3" type="button" class="filter__title">
    <span class="button">Статьи 3</span>
  </button>
</nav>
<div class="search__body">
        <div class="search__column filter-column filter__column_article-1">
                            lorem1
        </div>
        <div class="search__column filter-column filter__column_article-2">
                            lorem2
        </div>
        <div class="search__column filter-column filter__column_article-3">
                            lorem3
        </div>
</div>
</div>

<div>
<nav class="filter__navigation">
  <button data-filter="all" type="button" class="filter__title _active">
    <span class="button"> Все результаты </span>
  </button>
  <button data-filter="services-1" type="button" class="filter__title">
    <span class="button">Услуга 1</span>
  </button>
  <button data-filter="services-2" type="button" class="filter__title">
    <span class="button">Услуга 2</span>
  </button>
  <button data-filter="services-3" type="button" class="filter__title">
    <span class="button">Услуга 3</span>
  </button>
</nav>
<div class="search__body">
        <div class="search__column filter-column filter__column_services-1">
                            lorem1
        </div>
        <div class="search__column filter-column filter__column_services-2">
                            lorem2
        </div>
        <div class="search__column filter-column filter__column_services-3">
                            lorem3
        </div>
</div>
</div>

javascript
  • 1 1 个回答
  • 26 Views

1 个回答

  • Voted
  1. Best Answer
    ksa
    2024-11-07T14:00:30Z2024-11-07T14:00:30Z

    如何确保过滤仅应用于我自己的块?

    根据你的代码,这可以这样实现......

    let blogItems = document.querySelectorAll('.filter-column');
    if (blogItems.length > 0) {
      let blogFilters = document.querySelectorAll('.filter__title');
      if (blogFilters.length > 0) {
        for (let index = 0; index < blogFilters.length; index++) {
          const blogFilter = blogFilters[index];
          blogFilter.addEventListener("click", function(e) {
            e.preventDefault();
            const blogFilterValue = blogFilter.dataset.filter;
            const blogFilterActive = document.querySelector('.filter__title._active');
            blogFilter.classList.add('_active');
    
            let o = e.target.closest('nav').nextElementSibling
            blogItems = o.querySelectorAll('.filter-column');
            showBlogItems(blogFilterValue);
          });
        }
    
        function showBlogItems(filter) {
          for (let index = 0; index < blogItems.length; index++) {
            const blogItem = blogItems[index];
            if (filter === 'all' || !filter) {
              blogItem.classList.remove('_hide');
              blogItem.classList.remove('_active');
            } else {
              blogItem.classList.add('_hide');
              blogItem.classList.remove('_active');
              if (blogItem.classList.contains('filter__column_' + filter)) {
                blogItem.classList.remove('_hide');
                blogItem.classList.add('_active');
              }
            }
          }
        }
      }
    }
    .filter-column._hide {
      display: none;
    }
    <div>
      <nav class="filter__navigation">
        <button data-filter="all" type="button" class="filter__title _active">
        <span class="button"> Все результаты </span>
      </button>
        <button data-filter="article-1" type="button" class="filter__title">
        <span class="button">Статьи 1</span>
      </button>
        <button data-filter="article-2" type="button" class="filter__title">
        <span class="button">Статьи 2</span>
      </button>
        <button data-filter="article-3" type="button" class="filter__title">
        <span class="button">Статьи 3</span>
      </button>
      </nav>
      <div class="search__body">
        <div class="search__column filter-column filter__column_article-1">
          lorem1
        </div>
        <div class="search__column filter-column filter__column_article-2">
          lorem2
        </div>
        <div class="search__column filter-column filter__column_article-3">
          lorem3
        </div>
      </div>
    </div>
    
    <div>
      <nav class="filter__navigation">
        <button data-filter="all" type="button" class="filter__title _active">
        <span class="button"> Все результаты </span>
      </button>
        <button data-filter="services-1" type="button" class="filter__title">
        <span class="button">Услуга 1</span>
      </button>
        <button data-filter="services-2" type="button" class="filter__title">
        <span class="button">Услуга 2</span>
      </button>
        <button data-filter="services-3" type="button" class="filter__title">
        <span class="button">Услуга 3</span>
      </button>
      </nav>
      <div class="search__body">
        <div class="search__column filter-column filter__column_services-1">
          lorem1
        </div>
        <div class="search__column filter-column filter__column_services-2">
          lorem2
        </div>
        <div class="search__column filter-column filter__column_services-3">
          lorem3
        </div>
      </div>
    </div>

    但我建议这个解决方案。

    document.querySelector('main').addEventListener('click', e => {
      const ob = e.target.closest('.filter__title')
      if (!ob) return
      let t = ob.dataset.filter
      const on = ob.closest('nav')
      const od = on.nextElementSibling
      on.querySelector('._active').classList.remove('_active')
      ob.classList.add('_active')
      od.querySelectorAll('._hide').forEach(o => o.classList.remove('_hide'))
      if (t === 'all') return
      t = `.search__column:not(.filter__column_${t})`
      od.querySelectorAll(t).forEach(o => o.classList.add('_hide'))
    })
    .filter-column._hide {
      display: none;
    }
    ._active {
        background-color: green;
    }
    <main>
        <div>
          <nav class="filter__navigation">
            <button data-filter="all" type="button" class="filter__title _active">
            <span class="button"> Все результаты </span>
          </button>
            <button data-filter="article-1" type="button" class="filter__title">
            <span class="button">Статьи 1</span>
          </button>
            <button data-filter="article-2" type="button" class="filter__title">
            <span class="button">Статьи 2</span>
          </button>
            <button data-filter="article-3" type="button" class="filter__title">
            <span class="button">Статьи 3</span>
          </button>
          </nav>
          <div class="search__body">
            <div class="search__column filter-column filter__column_article-1">
              lorem1
            </div>
            <div class="search__column filter-column filter__column_article-2">
              lorem2
            </div>
            <div class="search__column filter-column filter__column_article-3">
              lorem3
            </div>
          </div>
        </div>
    
        <div>
          <nav class="filter__navigation">
            <button data-filter="all" type="button" class="filter__title _active">
            <span class="button"> Все результаты </span>
          </button>
            <button data-filter="services-1" type="button" class="filter__title">
            <span class="button">Услуга 1</span>
          </button>
            <button data-filter="services-2" type="button" class="filter__title">
            <span class="button">Услуга 2</span>
          </button>
            <button data-filter="services-3" type="button" class="filter__title">
            <span class="button">Услуга 3</span>
          </button>
          </nav>
          <div class="search__body">
            <div class="search__column filter-column filter__column_services-1">
              lorem1
            </div>
            <div class="search__column filter-column filter__column_services-2">
              lorem2
            </div>
            <div class="search__column filter-column filter__column_services-3">
              lorem3
            </div>
          </div>
        </div>
    </main>

    • 1

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