#24 - Filter Lists Based On Element

Filter any kind of list based on the presence of an element within it's children.

Conditional Visibility

Video Tutorial

Loom

tutorial.mov

Watch the video for step-by-step implementation instructions

The Code

72 lines

Paste this into Webflow

<!-- 💙 MEMBERSCRIPT #24 v0.1 💙 FILTER ITEMS WITHIN LIST BASED ON ELEMENT -->
<script>
document.addEventListener("DOMContentLoaded", function() {
  const filterListItems = function(list, filterAttribute) {
    const items = list.querySelectorAll(`[ms-code-filter-item="${filterAttribute}"]`);

    items.forEach(item => {
      const target = item.querySelector(`[ms-code-filter-target="${filterAttribute}"]`);

      if (!target || window.getComputedStyle(target).display === 'none') {
        item.style.display = 'none';
      } else {
        item.style.display = '';
      }
    });
  };

  const filterLists = document.querySelectorAll('[ms-code-filter-list]');

  const updateFiltering = function() {
    filterLists.forEach(list => {
      const filterAttribute = list.getAttribute('ms-code-filter-list');
      filterListItems(list, filterAttribute);
    });
  };

  const observeListChanges = function() {
    const observer = new MutationObserver(updateFiltering);
    filterLists.forEach(list => observer.observe(list, { childList: true, subtree: true }));
  };

  updateFiltering();
  observeListChanges();
});
</script>



<!-- 💙 MEMBERSCRIPT #24 v0.1.prop1 💙 FILTER ITEMS WITHIN LIST BASED ON ELEMENT(POLLING) -->
<script>
window.addEventListener("DOMContentLoaded", function() {
  const filterListItems = function(list, filterAttribute) {
    const items = list.querySelectorAll(`[ms-code-filter-item="${filterAttribute}"]`);

    items.forEach(item => {
      const target = item.querySelector(`[ms-code-filter-target="${filterAttribute}"]`);

      if (!target || window.getComputedStyle(target).display === 'none') {
        item.style.display = 'none';
      } else {
        item.style.display = '';
      }
    });
  };

  const filterLists = document.querySelectorAll('[ms-code-filter-list]');

  const updateFiltering = function() {
    filterLists.forEach(list => {
      const filterAttribute = list.getAttribute('ms-code-filter-list');
      filterListItems(list, filterAttribute);
    });
  };

  const pollPage = function() {
    updateFiltering();
    setTimeout(pollPage, 1000); // Poll every number1 second
  };

  pollPage();
});
</script>