CSS 图像透明度opacity兼容性介绍

时间：2021-05-08

以前的兼容

复制代码代码如下:
<span class="class">.transparent_class</span> <span class="rules">{
<span class="rule"><span class="attribute" style="color:rgb(181,137,0)">-ms-filter</span>:<span class="value"><span class="string" style="color:rgb(42,161,152)">"progid:DXImageTransform.Microsoft.Alpha(Opacity=50)"</span>;</span></span> <span class="comment" style="margin-bottom:0px!important; display:inline!important; vertical-align:top; color:rgb(88,110,117); font-style:italic"></span>
<span class="rule"><span class="attribute" style="color:rgb(181,137,0)">filter</span>:<span class="value"><span class="function">alpha(opacity=<span class="number" style="color:rgb(42,161,152)">50</span>)</span>;</span></span> <span class="comment" style="margin-bottom:0px!important; display:inline!important; vertical-align:top; color:rgb(88,110,117); font-style:italic"></span>
<span class="rule"><span class="attribute" style="color:rgb(181,137,0)">-moz-opacity</span>:<span class="value"><span class="number" style="color:rgb(42,161,152)">0.5</span>;</span></span> <span class="comment" style="margin-bottom:0px!important; display:inline!important; vertical-align:top; color:rgb(88,110,117); font-style:italic"></span>
<span class="rule"><span class="attribute" style="color:rgb(181,137,0)">-khtml-opacity</span>:<span class="value"> <span class="number" style="color:rgb(42,161,152)">0.5</span>;</span></span> <span class="comment" style="margin-bottom:0px!important; display:inline!important; vertical-align:top; color:rgb(88,110,117); font-style:italic"></span>
<span class="rule"><span class="attribute" style="color:rgb(181,137,0)">opacity</span>:<span class="value"> <span class="number" style="color:rgb(42,161,152)">0.5</span>;</span></span> <span class="comment" style="margin-bottom:0px!important; display:inline!important; vertical-align:top; color:rgb(88,110,117); font-style:italic"></span>
<span class="rule">}</span></span>
现在的兼容

复制代码代码如下:
<span class="class">.transparent_class</span> <span class="rules">{
<span class="rule"><span class="attribute" style="color:rgb(181,137,0)">-ms-filter</span>:<span class="value"><span class="string" style="color:rgb(42,161,152)">"progid:DXImageTransform.Microsoft.Alpha(Opacity=50)"</span>;</span></span> <span class="comment" style="margin-bottom:0px!important; display:inline!important; vertical-align:top; color:rgb(88,110,117); font-style:italic"></span>
<span class="rule"><span class="attribute" style="color:rgb(181,137,0)">filter</span>:<span class="value"><span class="function">alpha(opacity=<span class="number" style="color:rgb(42,161,152)">50</span>)</span>;</span></span> <span class="comment" style="margin-bottom:0px!important; display:inline!important; vertical-align:top; color:rgb(88,110,117); font-style:italic"></span>
<span class="rule"><span class="attribute" style="color:rgb(181,137,0)">opacity</span>:<span class="value"> <span class="number" style="color:rgb(42,161,152)">0.5</span>;</span></span> <span class="comment" style="margin-bottom:0px!important; display:inline!important; vertical-align:top; color:rgb(88,110,117); font-style:italic"></span>
<span class="rule">}</span></span>

复制代码代码如下:
<!DOCTYPE html>
<html>
<head>
<style>
img
{
opacity:0.4;
filter:alpha(opacity=40);
}
img:hover
{
opacity:1.0;
filter:alpha(opacity=100);
}
</style>
</head>
<body>
<h1>图像透明度</h1>
<img src="/i/tulip_peach_blossom_w_s.jpg" alt="Peach Blossom" />
<p><b>注释：</b>在 IE 中，必须添加 <!DOCTYPE>，这样才能将 :hover 选择器用于除了 <a> 之外的其它元素。</p>
</body>
</html>

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