jquery changes picture effects

With the popularity of mobile Internet, pictures have become one of the indispensable elements in web design. For image special effects processing, jQuery has become one of the commonly used tools among developers. This article will introduce some techniques and methods for using jQuery to achieve image special effects processing, to help you make full use of jQuery in web design.

1. Mouseover special effects

Mouseover special effects are a common image processing method, which can produce some dynamic effects when the mouse passes over the image, such as image flipping, image virtualization, etc. Chemical etc. The following code can help you implement a simple mouse hover effect:

$('.image').hover(function() {
    $(this).animate({
        opacity: 0.5
    }, 300);
}, function() {
    $(this).animate({
        opacity: 1
    }, 300);
});

In the above code, we use the hover method in jQuery. When the mouse hovers, the first function will be executed, which is to let the image The transparency becomes 0.5. When the mouse leaves, the second function is executed to change the image transparency to 1.

2. Picture zoom special effects

The picture zoom special effects can allow pictures to be zoomed during user interaction to increase the visual effect. The following code can help you implement a simple zoom effect:

$('.image').click(function() {
    $(this).animate({
        width: '150%',
        height: '150%'
    }, 500);
});

In the above code, we use the click method. When the user clicks on the image, the function will be executed to change the width and height of the image to 150% of the original size. .

3. Picture carousel effect

The picture carousel effect is a method often used to display pictures, which allows multiple pictures to be displayed in turn in the same area. The following code can help you implement a basic carousel effect:

var index = 0;
var length = $('.image').length;

setInterval(function() {
    $('.image').eq(index).fadeOut(500);
    index = (index + 1) % length;
    $('.image').eq(index).fadeIn(500);
}, 3000);

In the above code, we use the setInterval method to automatically execute the function every 3 seconds. The eq method is used in the function, the index-th picture is selected, and it is faded out, and then the index is increased by 1. After modulating the length, the next picture is obtained and faded out.

4. Picture flipping effect

The picture flipping effect allows pictures to be flipped during user interaction to increase the visual effect. The following code can help you implement a simple flip effect:

$('.image').hover(function() {
    $(this).find('.back').stop().rotateY(180);
}, function() {
    $(this).find('.back').stop().rotateY(0);
});

$.fn.rotateY = function(angle) {
    return this.css({
        '-webkit-transform': 'rotateY(' + angle + 'deg)',
        '-moz-transform': 'rotateY(' + angle + 'deg)',
        '-o-transform': 'rotateY(' + angle + 'deg)',
        'transform': 'rotateY(' + angle + 'deg)'
    });
};

In the above code, we use the hover method. When the user hovers the mouse, use the rotateY method to flip the image 180 degrees. When the mouse leaves , flip it back. The rotateY method is a customized method used to achieve the CSS3 rotation effect and is compatible in all browsers.

5. Picture scrolling special effects

Picture scrolling special effects can continuously scroll and display pictures in the same area, increasing the visual effect. The following code can help you achieve a basic scrolling effect:

var move = $('.move');
var box = $('.box');

move.html(move.html() + move.html());

var width = $('.move li').width();
var length = $('.move li').length;

box.on('mouseover', function() {
    clearInterval(timer);
});

box.on('mouseout', function() {
    timer = setInterval(show, 3000);
});

var timer = setInterval(show, 3000);

function show() {
    move.animate({
        'marginLeft': -width
    }, 400, function() {
        move.css({
            marginLeft: 0
        }).find('li:first').appendTo(move);
    });
}

In the above code, we first copy the image and append it to the original image sequence. Then set the image width through CSS. Then use the timer to execute the show function every 3 seconds to shift the picture and display the next picture. When the mouse hovers or leaves, the event is set through the on method, and the timer is frozen or continued.

6. Summary

The above are some basic techniques and methods for using jQuery to achieve image special effects processing. However, web design needs to be used flexibly according to actual conditions and remain innovative and personalized in order to better attract users and improve user experience.

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