How Can I Detect When a User Reaches the End of a Scrollable Web Page?

Detecting the Scrolling End Point

In the realm of web development, pagination systems strive to offer users a seamless content loading experience as they scroll down the page. To achieve this, it's crucial to determine when a user reaches the bottom of the scrollable area.

jQuery Solution

jQuery offers an elegant solution to this problem. By leveraging the .scroll() event on the window object, you can track the scrolling position:

$(window).scroll(function() {
  // Calculate the current scroll position
  var scrollTop = $(window).scrollTop();
  // Determine the total height of the window
  var windowHeight = $(window).height();
  // Determine the overall content height
  var documentHeight = $(document).height();

  // Check if the user is at the bottom of the page
  if (scrollTop + windowHeight >= documentHeight) {
    alert("User has scrolled to the bottom!");
  }
});

This script captures the user's scrolling activity and displays an alert when the bottom of the page is reached. To detect when the user is close to the bottom, you can adjust the comparison condition:

if (scrollTop + windowHeight > documentHeight - 100) {
  alert("User is near the bottom!");
}

By modifying the threshold value (100 pixels in this example), you can customize the trigger point for your pagination system.

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