How jquery displays visilibity

How jQuery displays visibility

Visibility is a CSS property that controls whether an element is visible. In web development, we often need to control the visibility attribute of an element to achieve complex dynamic effects.

In jQuery, we can use the .css() method to get or set the style of an element, including visibility. Specifically, in jQuery, we can show or hide an element in the following ways:

1. Display an element: $(element).css({ visibility: 'visible' });
2. Hide an element: $(element).css({ visibility: 'hidden' });
3. Switch the display state of an element: $(element).toggle();

Where, $(element) is the jQuery object of the element to be operated on. Based on the above code, we can find that in jQuery, we can directly control the display or hidden state of elements by operating CSS properties.

In addition to the above methods, jQuery also provides some other methods that can help us handle visibility-related operations more conveniently. Below, we introduce these methods one by one.

1. .show() and .hide()

The .show() and .hide() methods are similar to the .css() method, they can be controlled by CSS Properties to control the shown or hidden state of an element. However, unlike the .css() method, the .show() and .hide() methods can also control the height and width of the element, as well as some visibility-related properties, such as opacity. Specifically, when using the .show() or .hide() method, you can write:

Show an element: $(element).show();
Hide an element: $( element).hide();

2. .fadeIn() and .fadeOut()

.fadeIn() and .fadeOut() methods are used in jQuery to implement How to fade in and out effects. The implementation principle is to control the transparency of the element by modifying the opacity attribute, thereby achieving the fade-in and fade-out effect of the element. Specifically, when using the .fadeIn() or .fadeOut() method, you can write like this:

Fade in an element: $(element).fadeIn();
Fade out an element: $( element).fadeOut();

3. .slideDown() and .slideUp()

.slideDown() and .slideUp() methods are used in jQuery to implement Methods for effects such as drop-down menus and folding panels. These methods achieve the effect of showing and hiding by modifying the height of the element. Specifically, when using the .slideDown() or .slideUp() method, you can write:

Expand an element: $(element).slideDown();
Collapse an element: $( element).slideUp();

Summary

So far, we have introduced the main methods of controlling the display and hidden state of elements in jQuery. They are:

1. Directly control the visibility attribute of the element through the .css() method;
2. Control the visibility, height, width and opacity attributes of the element through the .show() and .hide() methods;
3. Pass The .fadeIn() and .fadeOut() methods control the opacity attribute of the element;
4. Control the element's height attribute through the .slideDown() and .slideUp() methods.

In actual development, we need to choose appropriate methods to control the display and hidden state of elements according to specific needs to achieve better results.

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