怎样隐藏标签上的网站图标，但是在载入时显示一个apng（图片我自己准...

/*页面加载的时候显示loading.png(转换成base64编码)*/
.tab-icon-image[busy='true'] {
      list-style-image: url(data:image/png;base64,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%3D%3D) !important;   
}

/*页面加载完成后隐藏favicon.ico*/
.tab-icon-image:not([busy='true']) {
     list-style-image: url("chrome://global/skin/icons/folder-item.png") !important;  
     display: none !important; /*隐藏图标*/
}

Real_Fiona：

/*页面加载的时候显示loading.png(转换成base64编码)*/
.tab-icon-image[busy='true'] {
      list-style-image: url(data:image/png;base64,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%3D%3D) !important;   
}

/*页面加载完成后隐藏favicon.ico*/
.tab-icon-image:not([busy='true']) {
     list-style-image: url("chrome://global/skin/icons/folder-item.png") !important;  
     display: none !important; /*隐藏图标*/
}

楼主是要这样吗？回到原帖

Real_Fiona：我这里是可以的 b7pre

在加载的状态 显示的是你给的那个loading.png
一档加载完成后（你要的是隐藏网站的favicon）显示网站favicon回到原帖

Real_Fiona：刚更新了之后 发现也不能用了

一直是显示favicon 不像没更新前加载的时候是显示fold-item.png回到原帖