Adding Infinite Scroll to a WordPress Theme is very easy. I have added Infinite Scroll to wordpress home, category, archive page and other pages where pagination generally comes. Check out 5 simple steps to add Infinite Scroll on wordpress blog.
Tag: How to use functions.php file in Wordpress Theme
functions.php file in Wordpress theme is very useful and you can write your custom functions in this file. Check out copy paste functions that you can write in your functions.php file.