我只是想知道当jQuery不支持不透明度时,如何在IE浏览器中生成淡入淡出效果？动画不透明度是他们在Firefox和Chrome等其他浏览器中淡出的方式.
我进入了代码,但老实说,我找不到任何可以理解的东西！
我进入了代码,但老实说,我找不到任何可以理解的东西！
解决方法
从
jquery源,它们基本上检测是否支持不透明度,如果不支持,则使用IEs alpha过滤器
if ( !jQuery.support.opacity ) {
jQuery.cssHooks.opacity = {
get: function( elem,computed ) {
// IE uses filters for opacity
return ropacity.test( (computed && elem.currentStyle ? elem.currentStyle.filter : elem.style.filter) || "" ) ?
( parseFloat( RegExp.$1 ) / 100 ) + "" :
computed ? "1" : "";
},set: function( elem,value ) {
var style = elem.style,currentStyle = elem.currentStyle;
// IE has trouble with opacity if it does not have layout
// Force it by setting the zoom level
style.zoom = 1;
// Set the alpha filter to set the opacity
var opacity = jQuery.isNaN( value ) ?
"" :
"alpha(opacity=" + value * 100 + ")",filter = currentStyle && currentStyle.filter || style.filter || "";
style.filter = ralpha.test( filter ) ?
filter.replace( ralpha,opacity ) :
filter + " " + opacity;
}
};
}
