CSS: Alternative min()
CSS: Alternative min()
提问于 2020-05-06 14:00:59
根据div的大小，我想设置background-position-x和background-size。仅使用没有JS或JQuery的CSS，我使用分钟()，它可以：
.test {
transition: all 0.5s;
background-image: url(./my-asset.svg);
background-repeat: no-repeat;
background-position-x: min(-50px, -100%);
background-position-y: center;
background-size: min(50px, 100%) 100%;
}这是正常工作的，但只适用于最近的浏览器，但我有一个Firefox目标为v.68，而且它不兼容。如果不使用JS或JQuery，而只使用CSS，还有什么可供选择的呢？
我使用min()在输出中复制我想要的内容。将红色部分悬停以使其工作：
body,
html {
height: 100%;
width: 100%;
margin: 5px;
}
#main {
display: flex;
flex-direction: row;
background-color: cyan;
}
.use-px {
width: 300px;
height: 300px;
border: solid 3px black;
}
.use-percentage {
margin-left: 200px;
width: 100px;
height: 300px;
border: solid 3px black;
}
.left-over-image {
width: 25%;
height: 100%;
transition: all 1s;
background-color: red;
background-image: url(https://www.w3schools.com/images/w3schools_green.jpg);
background-repeat: no-repeat;
background-position-x: min(-50px, -100%);
background-position-y: center;
background-size: min(50px, 100%) 100%;
}
.left-over-image:hover {
background-position: left;
}<html>
<body>
<div id="main">
<div class="use-px">
<!-- It will use 50px, because 25% of 300px is 75px. -->
<div class="left-over-image"></div>
</div>
<div class="use-percentage">
<!-- It will use 100%, because 25% of 100px is 25px. -->
<div class="left-over-image"></div>
</div>
</div>
</body>
</html>
回答 1
Stack Overflow用户
回答已采纳
发布于 2020-05-06 14:08:33
您可以考虑使用伪元素的技巧。
调整两个示例的大小以确保它们的行为相同：
.box {
height:100px;
width:100px;
border:2px solid;
resize:both;
overflow:hidden;
background:linear-gradient(red,blue) 0/50px 50px no-repeat;
background-position-x: min(4em, 100%);
}
.alt {
height:100px;
width:100px;
border:2px solid;
resize:both;
overflow:hidden;
position:relative;
z-index:0;
}
.alt::before {
content:"";
position:absolute;
background:inherit;
background:linear-gradient(red,blue) 0/50px 50px no-repeat;
background-position-x:100%;
max-width:calc(4em + 50px); /* 4em + width of background */
width:100%;
top:0;
bottom:0;
left:0;
z-index:-1;
}<div class="box">
</div>
<div class="alt">
</div>
更新
根据您的新代码：
body,
html {
height: 100%;
width: 100%;
margin: 0;
overflow: hidden;
}
#main {
display: flex;
flex-direction: row;
background-color: cyan;
}
.use-px {
width: 300px;
height: 300px;
border: solid 1px black;
}
.use-percentage {
width: 100px;
height: 300px;
border: solid 1px black;
}
.left-over-image {
width: 25%;
height: 100%;
background-color: red;
position:relative;
overflow:hidden;
}
.left-over-image::before {
content:"";
position:absolute;
top:0;
bottom:0;
left:0;
width:100%;
max-width:50px;
background-image: url(https://www.w3schools.com/images/w3schools_green.jpg);
background-size: 100% 100%;
transform:translateX(-100%);
transition: all 1s;
}
.left-over-image:hover::before {
transform:translateX(0);
}<div id="main">
<div class="use-px">
<!-- It will use 50px, because 25% of 300px is 75px. -->
<div class="left-over-image"></div>
</div>
<div class="use-percentage">
<!-- It will use 100%, because 25% of 100px is 25px. -->
<div class="left-over-image"></div>
</div>
</div>
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/61637143
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