悬停时将 flex 子项扩展到全宽
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【中文标题】悬停时将 flex 子项扩展到全宽【英文标题】：expand flex children to full width on hover 【发布时间】：2021-11-13 09:09:49 【问题描述】：在下面的示例中，是否可以仅使用 css 将 flex 子项扩展到全宽，或者我应该使用 javascript 来执行此操作？ 注意：在这种情况下使用 flexbox 很重要。 如果无法使用 css 创建它，您能否建议针对此问题的 javascript 功能？
html
box-sizing: border-box;
background: #ffc600;
font-family: 'sans-serif';
font-size: 20px;
font-weight: 200;
body
margin: 0;
*, *:before, *:after
box-sizing: inherit;
.panels
min-height: 100vh;
overflow: hidden;
display: flex;
position: relative;
.panel
background: #6B0F9C;
box-shadow: inset 0 0 0 5px rgba(255,255,255,0.1);
color: white;
text-align: center;
align-items: center;
transition:
transform 0.2s,
flex 0.7s cubic-bezier(0.61,-0.19, 0.7,-0.11),
background 0.2s;
font-size: 20px;
background-size: cover;
background-position: center;
flex: 1;
display: flex;
flex-direction: column;
justify-content: center;
.panel a
color:#fff;
font-weight: bold;
font-size: 20px;
text-decoration: none;
text-shadow: 1px 2px rgba(0,0,0,.7);
.panel:hover
flex:2
.panel1 background-image:url(https://source.unsplash.com/gYl-UtwNg_I/1500x1500);
.panel2 background-image:url(https://source.unsplash.com/rFKUFzjPYiQ/1500x1500);
.panel3 background-image:url(https://images.unsplash.com/photo-1465188162913-8fb5709d6d57?ixlib=rb-0.3.5&q=80&fm=jpg&crop=faces&cs=tinysrgb&w=1500&h=1500&fit=crop&s=967e8a713a4e395260793fc8c802901d);
.panel4 background-image:url(https://source.unsplash.com/ITjiVXcwVng/1500x1500);
.panel5 background-image:url(https://source.unsplash.com/3MNzGlQM7qs/1500x1500); <div class="panels">
<div class="panel panel1"><a href="">link1</a></div>
<div class="panel panel2"><a href="">link2</a></div>
<div class="panel panel3"><a href="">link3</a></div>
<div class="panel panel4"><a href="">link4</a></div>
<div class="panel panel5"><a href="">link5</a></div>
</div>【问题讨论】：
【参考方案1】：将min-width:0;overflow:hidden; 添加到所有面板，然后在悬停时使用flex-basis:100%
html
box-sizing: border-box;
background: #ffc600;
font-family: 'sans-serif';
font-size: 20px;
font-weight: 200;
body
margin: 0;
*,
*:before,
*:after
box-sizing: inherit;
.panels
min-height: 100vh;
overflow: hidden;
display: flex;
position: relative;
.panel
background: #6B0F9C;
box-shadow: inset 0 0 0 5px rgba(255, 255, 255, 0.1);
color: white;
text-align: center;
align-items: center;
transition: transform 0.2s, flex 0.7s cubic-bezier(0.61, -0.19, 0.7, -0.11), background 0.2s;
font-size: 20px;
background-size: cover;
background-position: center;
flex: 1;
min-width:0;
overflow:hidden;
display: flex;
flex-direction: column;
justify-content: center;
.panel a
color: #fff;
font-weight: bold;
font-size: 20px;
text-decoration: none;
text-shadow: 1px 2px rgba(0, 0, 0, .7);
.panel:hover
flex-basis: 100%;
.panel1
background-image: url(https://source.unsplash.com/gYl-UtwNg_I/1500x1500);
.panel2
background-image: url(https://source.unsplash.com/rFKUFzjPYiQ/1500x1500);
.panel3
background-image: url(https://images.unsplash.com/photo-1465188162913-8fb5709d6d57?ixlib=rb-0.3.5&q=80&fm=jpg&crop=faces&cs=tinysrgb&w=1500&h=1500&fit=crop&s=967e8a713a4e395260793fc8c802901d);
.panel4
background-image: url(https://source.unsplash.com/ITjiVXcwVng/1500x1500);
.panel5
background-image: url(https://source.unsplash.com/3MNzGlQM7qs/1500x1500);
<div class="panels">
<div class="panel panel1"><a href="">link1</a></div>
<div class="panel panel2"><a href="">link2</a></div>
<div class="panel panel3"><a href="">link3</a></div>
<div class="panel panel4"><a href="">link4</a></div>
<div class="panel panel5"><a href="">link5</a></div>
</div>【讨论】：
【参考方案2】：解决方案： 隐藏所有悬停的孩子，除了鼠标指针下的孩子
可以用纯css来完成：
.panels:hover .panel:not(:hover)
display: none;
这里是更新的sn-p：
html
box-sizing: border-box;
background: #ffc600;
font-family: 'sans-serif';
font-size: 20px;
font-weight: 200;
body
margin: 0;
*, *:before, *:after
box-sizing: inherit;
.panels
min-height: 100vh;
overflow: hidden;
display: flex;
position: relative;
.panel
background: #6B0F9C;
box-shadow: inset 0 0 0 5px rgba(255,255,255,0.1);
color: white;
text-align: center;
align-items: center;
transition:
transform 0.2s,
flex 0.7s cubic-bezier(0.61,-0.19, 0.7,-0.11),
background 0.2s;
font-size: 20px;
background-size: cover;
background-position: center;
flex: 1;
display: flex;
flex-direction: column;
justify-content: center;
.panel a
color:#fff;
font-weight: bold;
font-size: 20px;
text-decoration: none;
text-shadow: 1px 2px rgba(0,0,0,.7);
.panel:hover
flex: 2;
.panel1 background-image:url(https://source.unsplash.com/gYl-UtwNg_I/1500x1500);
.panel2 background-image:url(https://source.unsplash.com/rFKUFzjPYiQ/1500x1500);
.panel3 background-image:url(https://images.unsplash.com/photo-1465188162913-8fb5709d6d57?ixlib=rb-0.3.5&q=80&fm=jpg&crop=faces&cs=tinysrgb&w=1500&h=1500&fit=crop&s=967e8a713a4e395260793fc8c802901d);
.panel4 background-image:url(https://source.unsplash.com/ITjiVXcwVng/1500x1500);
.panel5 background-image:url(https://source.unsplash.com/3MNzGlQM7qs/1500x1500);
.panels:hover .panel:not(:hover)
display: none;
<div class="panels">
<div class="panel panel1"><a href="">link1</a></div>
<div class="panel panel2"><a href="">link2</a></div>
<div class="panel panel3"><a href="">link3</a></div>
<div class="panel panel4"><a href="">link4</a></div>
<div class="panel panel5"><a href="">link5</a></div>
</div>【讨论】：
【参考方案3】：你可以的
.panel:hover flex-basis: 100%;
它将其余部分缩小到最小并扩大悬停的部分。检查这是否有帮助。
【讨论】：
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