How Can I Use jQuery to Manage the Active State of Menu Items?

Changing the State of Menu Items with jQuery

In this post, we'll delve into how to utilize jQuery's capabilities to dynamically manage class styles for list items within a menu. The goal is to add the 'current' class to a specific list item upon click and simultaneously remove it from all other items.

Initial Setup

To initiate the functionality, we first need to define the menu items with

elements and links using tags. We'll add a class of 'current' to one of the list item links to indicate the initially selected item:

Adding Event Listener

Using jQuery, we attach an event listener to each list item's link to handle the click event:

$('#menu li a').on('click', function() {
  // Add 'current' class to this list item
  $(this).addClass('current');
  
  // Remove 'current' class from all other list items
  $('#menu li a.current').not(this).removeClass('current');
});

Explanation

Within the event listener, the jQuery code snippet performs the following tasks:

1. Adds the 'current' class to the clicked list item's link using $(this).addClass('current').
2. Removes the 'current' class from all other list item links by using $('#menu li a.current').not(this).removeClass('current'). This line selects all links with the 'current' class and excludes the currently clicked one.

Result

As a result, when a user clicks on any of the menu items, its link will gain the 'current' class style, while the 'current' class will be removed from the previously active item. This ensures that only one list item link has the current styling at any given time.

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