Summary of methods to use jQuery to achieve various drop-down menu functional effects

jQuery is a javascript library that is very convenient to use and very powerful. Normally, only the menu bar is displayed in the window, and when the mouse pointer points to the menu bar, the menu bar's submenus are displayed. When the mouse pointer leaves the menu, the submenu is hidden and only the main menu bar is displayed. Based on this feature of the drop-down menu, we can use jQuery technology to implement these functions. This article will explain in detail the jQuery technology to implement the function of drop-down menu.

First, you can first understand the relevant content introduction in"Various Drop-down Menu Implementation Tutorial"

This course goes from easy to difficult, step by step, from static web page layout to implementation using different technologies such as HTML/CSS, JavaScript, and jQuery. Dynamic drop-down menus allow you to master the production of drop-down menus and debug code between different browsers to solve browser compatibility issues.

2. jQuery implements drop-down menu functions and effects

1.jquery selects the select drop-down menu option item to trigger an event

In many applications, selecting a select drop-down option will trigger an event and perform the corresponding operation. The following is a code example to introduce how to use jquery to implement this function. All options other than the first item selected by the code can write the value into p.

2.Implementation experience of jquery drop-down menu

Part one:Added a trigger button for the menu

Part 2:Bound a click event handler function,After the trigger button is clicked, it is given to the outermost layer of the drop-down menu li binds the hover processing function, which feels like a clever place.Bind the hover function to the outermost li. The processing function here is written so that no processing is done when the mouse hovers over the li (the first function is empty), and the li is closed when the mouse leaves. .In this way, the menu that expands ul later will be inside the outermost li, so the menu will not be automatically closed, which means that when the mouse leaves the entire menu, the li will be automatically closed.

Part 3:Bind a function to the hover event of the ul nested under the menu, which is used to expand and collapse the next-level menu. At the same time, a collapsing processing function is also bound to the next-level menu, which works together with the collapsing function bound to the outermost li by click in the trigger menu. It is the automatic collapsing function of the menu.

3.A jQuery drop-down menu with simple code

A simple jQuery drop-down menu with very little code, very suitable for beginners with basic knowledge to learn and improve. The implementation is also very simple, mainly through jQuery code. When the mouse pointer points to the menu bar, the submenu of the menu bar is displayed. When the mouse pointer leaves the menu, the submenu is hidden and only the main menu bar is displayed.

4.Navigation drop-down menu effect implemented by jQuery

Navigation effect (compatible with IE6)

1) Use the $("#navigation ul li:has(ul)") function to select

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