Infinite Scroll

    Infinite Scroll allows to load additional content or do any other required action when page scroll is near to the bottom.

    Infinite Scroll Layout

    To enable Infinite Scroll you need to add additional infinite-scroll-content class to any scrollable container, particularly to our page scrolling area - <div class="page-content">:

    <div class="page">
        <div class="page-content infinite-scroll-content infinite-scroll-top">
            ...
            <div class="preloader infinite-scroll-preloader"></div>
        </div>
    </div>

    Where:

    • div class="page-content infinite-scroll-content" our infinite scroll container

    • data-infinite-distance attribute allows to configure distance from the bottom of page (in px) to trigger infinite scroll event. By default, if not specified, it is 50 (px)

    • div class="preloader infinite-scroll-preloader" preloader with few additional styles to be used with infinite scroll

    Infinite Scroll On Top

    If you need to use infinite scroll on top of the page (when it scrolled to top), you need to add additional infinite-scroll-top class to "page-content":

    <div class="page">
        <div class="page-content infinite-scroll-content infinite-scroll-top">
            <div class="preloader infinite-scroll-preloader"></div>
            ...
        </div>
    </div>

    Infinite Scroll App Methods

    There are two App's methods that can be used with infinite scroll container:

    app.infiniteScroll.create(el)- add infinite scroll event listener to the specified HTML element

    • el - HTMLElement or string (with CSS selector) - infinite scroll container. Required.
    Use this methods only in case you have added infinite scroll content after page init or if you want to enable it later. Otherwise if there is "infinite-scroll-content" element on page init it will be created automatically

    app.infiniteScroll.destroy(el)- remove infinite scroll event listener from the specified HTML container

    • el - HTMLElement or string (with CSS selector) - infinite scroll container. Required.

    Infinite Scroll Events

    Infinite Scroll will fire the following DOM events on app instance:

    Dom Events

    Event Target Description
    infinite Infinite Scroll container<div class="page-content infinite-scroll-content"> Event will be triggered when page scroll reaches specified (in data-distance attribute) distance to the bottom.

    App Events

    Infinite scroll component emits events on app instance as well as on DOM element.

    Event Target Arguments Description
    infinite app (el, event) Event will be triggered when page scroll reaches specified (in data-distance attribute) distance to the bottom.

    Example

    <div class="page" data-page="home">
      ...
      <div class="page-content infinite-scroll-content">
        <div class="list simple-list">
          <ul>
            <li>Item 1</li>
            <li>Item 2</li>
            <li>Item 3</li>
            <li>Item 4</li>
            <li>Item 5</li>
            <li>Item 6</li>
            <li>Item 7</li>
            <li>Item 8</li>
            <li>Item 9</li>
            <li>Item 10</li>
            <li>Item 11</li>
            <li>Item 12</li>
            <li>Item 13</li>
            <li>Item 14</li>
            <li>Item 15</li>
            <li>Item 16</li>
            <li>Item 17</li>
            <li>Item 18</li>
            <li>Item 19</li>
            <li>Item 20</li>
          </ul>
        </div>
        <div class="preloader infinite-scroll-preloader"></div>
      </div>
    </div>
    var app = new Framework7();
    
    var $$ = Dom7;
    
    // Loading flag
    var allowInfinite = true;
    
    // Last loaded index
    var lastItemIndex = $$('.list li').length;
    
    // Max items to load
    var maxItems = 200;
    
    // Append items per load
    var itemsPerLoad = 20;
    
    // Attach 'infinite' event handler
    $$('.infinite-scroll-content').on('infinite', function () {
      // Exit, if loading in progress
      if (!allowInfinite) return;
    
      // Set loading flag
      allowInfinite = false;
    
      // Emulate 1s loading
      setTimeout(function () {
        // Reset loading flag
        allowInfinite = true;
    
        if (lastItemIndex >= maxItems) {
          // Nothing more to load, detach infinite scroll events to prevent unnecessary loadings
          app.infiniteScroll.destroy('.infinite-scroll-content');
          // Remove preloader
          $$('.infinite-scroll-preloader').remove();
          return;
        }
    
        // Generate new items HTML
        var html = '';
        for (var i = lastItemIndex + 1; i <= lastItemIndex + itemsPerLoad; i++) {
          html += '<li>Item ' + i + '</li>';
        }
    
        // Append new items
        $$('.list ul').append(html);
    
        // Update last loaded index
        lastItemIndex = $$('.list li').length;
      }, 1000);
    });