图片加载失败处理
<img src="xxx.png" alt="加载失败" onerror="this.classList.add('error');">
img.error {
display: inline-block;
transform: scale(1);
content: '';
color: transparent;
}
img.error::before {
content: '';
position: absolute;
left: 0;
top: 0;
width: 100%;
height: 100%;
/* border-radius: 6px; */
background: #f7f7f7 url(img/img_error.png) no-repeat center / 50% 70%;
}
img.error::after {
content: attr(alt);
position: absolute;
left: 0;
bottom: 0;
width: 100%;
line-height: 2;
background-color: rgba(0, 0, 0, .1);
color: white;
font-size: 12px;
text-align: center;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}