CSS resize 属性允许你控制一个元素的可调整大小性
配合 resize 实现子元素的动态宽度
HTML:
<div class='picA'>
<div class='picB'>
<div readonly class='resizeElement'></div>
</div>
</div>
SCSS:
html {
background: #ddd;
height: 100%;
width: 100%;
}
.picA {
background-image: url(https://z3.ax1x.com/2021/08/17/fhJdpQ.png);
background-size: cover;
width: 650px;
height: 340px;
border: 5px solid #f0e5ab;
border-radius: 3px;
box-shadow: 0 0 1px #999, -2px 2px 3px rgba(0, 0, 0, 0.2);
padding: 0;
margin: 1rem auto;
position: relative;
overflow: hidden;
}
.picB {
background-image: url(https://z3.ax1x.com/2021/08/17/fhJUfg.png);
background-size: cover;
height: 340px;
position: absolute;
top: 0;
left: 0;
min-width: 0;
max-width: 650px;
box-sizing: border-box;
}
.picB:before {
content: "↔";
position: absolute;
background: rgba(0, 0, 0, 0.5);
font-size: 16px;
color: white;
top: 0;
right: 0;
height: 100%;
line-height: 340px;
}
.resizeElement {
resize: horizontal;
overflow: scroll;
opacity: 0;
position: relative;
top: 50%;
left: 0px;
height: 15px;
max-width: 650px;
min-width: 15px;
width: 0;
cursor: move;
transform: scaleY(35);
transform-origin: center center;
animation: delta 5s normal ease-in-out 1s;
}
@keyframes delta {
30% {
width: 0;
}
60% {
width: 350px;
}
100% {
width: 0;
}
}
效果如下:
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