Easy way to add infinite scroll in wordpress theme without plugin, simple wordpress function to add infinite scroll in wordpress theme.

How To Add Infinite Scroll To WordPress Theme

Very easy, using wp_enqueue_scripts action and wp_footer action and wp_enqueue_script() function, we will add infinite scroll to our wordpress theme, we also need is_singular() function and next_posts_link() function.

Include Infinite Scroll

Download infinite scroll from our server, now we will include infinite scroll to our wordpress theme, add this code in your functions.php file:

function include_infinite_scroll_js(){
    if( !is_singular() ){
        wp_enqueue_script( 'my-infinite-scroll', get_template_directory_uri() . '/jquery.infinitescroll.min.js', array('jquery') );
    }
}
add_action('wp_enqueue_scripts', 'include_infinite_scroll_js');

Now upload “jquery.infinitescroll.min.js” to your wordpress theme folder, for example:

include infinite scroll to wordpress theme

Add Infinite Scroll To Footer

Now copy this code and paste it in your functions.php file:

// By Qassim Hassan - http://wp-time.com
function add_infinite_scroll_to_footer(){
    if( !is_singular() ){
        ?>
            <div id="infinite-scroll-wrap">
                <?php next_posts_link('Next page'); ?>
            </div>

            <script type="text/javascript">
                jQuery(document).ready(function() {
                    jQuery('.main-column').infinitescroll({ // change '.main-column' to main column class or id in your theme
                        navSelector : "#infinite-scroll-wrap", // selector for the paged navigation (it will be hidden)
                        nextSelector : "#infinite-scroll-wrap a:first", // selector for the NEXT link (to page number 2)
                        itemSelector : ".main-column .hentry", // selector for all items you'll retrieve, change '.main-column' to main column class or id in your theme
                        debug : false, // disable debug messaging ( to console.log )
                        loading: {
                            img : "data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==", // loading image, you can add image link
                            msgText : 'Loading posts...', // loading message
                            finishedMsg : 'No more posts!' // finished message
                        },
                        animate : false, // if the page will do an animated scroll when new content loads
                        dataType : 'html' // data type is html
                    });
                    jQuery('#post-navigation').remove(); // change '#post-navigation' to pagination class or id in your wordpress theme,
                });
            </script>
        <?php
    }
}
add_action('wp_footer', 'add_infinite_scroll_to_footer');

Now please focus with me! change ‘.main-column’ to main column class or id in your wordpress theme, for example twentyfifteen theme main column id is ‘#main’:

infinite scroll main column

Now change ‘#post-navigation’ to pagination class or id in your wordpress theme, for example twentyfifteen theme pagination class is ‘.pagination’:

infinite scroll pagination

You can add image link, change this:

img : "data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==", // loading image, you can add image link

To this:

img : "http://wp-time.com/my-ajax-load.gif",

Infinite Scroll Style

You can make css style using this ID:

#infscr-loading{ /* my style */ }
#infscr-loading div{ /* my style */ }
#infscr-loading img{ /* my style */ }

And you can add wrap to text messages:

msgText : '<div class="my-class">Loading posts...</div>', // loading message

Note

The main column is containing posts directly, for example:

main column for infinite scroll

You can use Infinite Scroll To TF Plugin to add Infinite Scroll to Twenty Fifteen theme easily, and you can check code source to learn more about infinite scroll.