问题描述

我似乎无法在互联网上的任何地方找到任何这样的例子，但这是我要尝试做的事情......我正在尝试以最干净的方式放置它出去.

I can't seem to find any examples of this having been done anywhere on the internet before but here is what I am going to attempt to do...I'm trying to go about the cleanest possible way of laying this out.

所以我有一个图片库，其中的图片大小都不同.我想让它当你将鼠标悬停在图像上时，它会变成橙色.只是一个简单的悬停效果.

So I have an image gallery where the images are all different sizes. I want to make it so that when you mouseover the image, it turns a shade of orange. Just a simple hover effect.

我想在不使用图像交换的情况下执行此操作，否则我必须为每个单独的图库图像创建一个橙色的悬停图像，我希望它更具动态性.

I want to do this without using an image swap, otherwise I'd have to create an orange colored hover-image for each individual gallery image, I'd like this to be a bit more dynamic.

我的计划只是在图像上放置一个空的 div 绝对具有背景颜色、宽度和高度 100% 和不透明度:0.然后使用 jquery，在鼠标悬停时我会将不透明度淡化到 0.3 左右，并且鼠标移出时淡入零.

My plan is just to position an empty div over the image absolutely with a background color, width and height 100% and opacity: 0. Then using jquery, on mouseover I'd have the opacity fade to 0.3 or so, and fade back to zero on mouseout.

我的问题是，什么是布局 html 和 css 以高效和干净地执行此操作的最佳方式.

My question is, what would be the best way to layout the html and css to do this efficiently and cleanly.

这是一个简短但不完整的设置:

Here's a brief, but incomplete setup:

<li>
  <a href="#">
    <div class="hover">&nbsp;</div>
    <img src="images/galerry_image.png" />
  </a>
</li>

.hover {
width: 100%;
height: 100%;
background: orange;
opacity: 0;
}

推荐答案

让我们从稍微简单的 HTML 开始:

So let's start with slightly simpler HTML:

<ul id="special">
    <li><a href="#"><img src="opensrs-2.png" /></a></li>
    <li><a href="#"><img src="opensrs-1.png" /></a></li>
</ul>

这是我的解决方案:

<style type="text/css">
#special a img { border: none;}
</style>
<script type="text/javascript">
$(document).ready(function() {

    $('#special a').bind('mouseover', function(){
        $(this).parent('li').css({position:'relative'});
        var img = $(this).children('img');
        $('<div />').text(' ').css({
            'height': img.height(),
            'width': img.width(),
            'background-color': 'orange',
            'position': 'absolute',
            'top': 0,
            'left': 0,
            'opacity': 0.5
        }).bind('mouseout', function(){
            $(this).remove();
        }).insertAfter(this);
    });

});
</script>

快速淡入，淡出:

$('#special a').bind('mouseover', function(){
    $(this).parent('li').css({position:'relative'});
    var img = $(this).children('img');
    $('<div />').text(' ').css({
        'height': img.height(),
        'width': img.width(),
        'background-color': 'orange',
        'position': 'absolute',
        'top': 0,
        'left': 0,
        'opacity': 0.0
    }).bind('mouseout', function(){
        $(this).fadeOut('fast', function(){
            $(this).remove();
        });
    }).insertAfter(this).animate({
        'opacity': 0.5
    }, 'fast');
});

这篇关于jQuery图像悬停颜色叠加的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持跟版网！