jQuery 如何使用css更改悬停时图像的不透明度
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How to change the opacity of image on hover using css
提问by user2481095
I'm trying to figure out how to set all images to be 50% opacity initially, and then change to 100% opacity on hover.
我试图弄清楚如何将所有图像最初设置为50% 不透明度，然后在悬停时更改为100% 不透明度。
I tried setting this rule in the .cssfile but it gives a parse error:
我尝试在.css文件中设置此规则，但它给出了解析错误：
img {
opacity:0.4;
filter:alpha(opacity=40);
}
img:hover {
opacity:1.0;
filter:alpha(opacity=100);
}
回答by jterry
Your code is good- verified in this Fiddle with a friendly fish: http://jsfiddle.net/Qrufy/
您的代码很好-在此 Fiddle 中与一条友好的鱼一起验证：http: //jsfiddle.net/Qrufy/
img {
opacity: 0.5;
filter: alpha(opacity=40);
}
img:hover {
opacity: 1.0;
filter: alpha(opacity=100);
} <img src="http://upload.wikimedia.org/wikipedia/commons/thumb/1/15/Colossoma_macropomum_01.jpg/800px-Colossoma_macropomum_01.jpg" />The opacityproperty works in all modern browsers, and the filter:alphacovers <= IE8.
该opacity属性适用于所有现代浏览器，并且filter:alpha封面 <= IE8。
