javascript - 如何切换 div 以将其扩展并缩小回原始大小?
问题描述
所以html中有5个div面板。单击其中一个时,它应该扩大到全尺寸并在再次单击时缩小。我的 javascript 代码只允许我出于某种原因缩小它。
这是html代码:
<div class="panels">
<div class="panel panel1">
<p>Hey</p>
<p>Let's</p>
<p>Dance</p>
</div>
<div class="panel panel2">
<p>Give</p>
<p>Take</p>
<p>Receive</p>
</div>
<div class="panel panel3">
<p>Experience</p>
<p>It</p>
<p>Today</p>
</div>
<div class="panel panel4">
<p>Give</p>
<p>All</p>
<p>You can</p>
</div>
<div class="panel panel5">
<p>Life</p>
<p>In</p>
<p>Motion</p>
</div>
</div>
</body>
这是CSS代码:
html {
box-sizing: border-box;
background:#ffc600;
font-family:'Open Sans';
font-size: 14px;
font-weight: 400;
}
body {
margin: 0;
}
*, *:before, *:after {
box-sizing: inherit;
}
.panels {
min-height:100vh;
overflow: hidden;
display: flex;
}
.panel {
background:#6B0F9C;
box-shadow:inset 0 0 0 5px rgba(255,255,255,0.1);
color:white;
text-align: center;
align-items:center;
/* Safari transitionend event.propertyName === flex */
/* Chrome + FF transitionend event.propertyName === flex-grow */
transition: font-size 0.7s cubic-bezier(0.61,-0.19, 0.7,-0.11), 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;
justify-content: center;
align-items: center;
display: flex;
flex-direction: column;
}
.panel1 {
background-image:url(https://source.unsplash.com/8y8DbWwDTz4/1500x1500);
}
.panel2 {
background-image:url(https://source.unsplash.com/ZQsKyddXezA/1500x1500);
}
.panel3 {
background-image:url(https://source.unsplash.com/cbHtEWXkIdQ/1500x1500);
}
.panel4 {
background-image:url(https://source.unsplash.com/FwiNLpZdKVk/1500x1500);
}
.panel5 {
background-image:url(https://source.unsplash.com/w8TtcStjyWY/1500x1500);
}
.panel > * {
margin:0;
width: 100%;
transition:transform 0.5s;
flex: 1 0 auto;
display: flex;
justify-content: center;
align-items: center;
}
.panel > *:first-child {
transform: translateY(-100%);
}
.panel.open-active > *:first-child {
transform: translateY(0);
}
.panel > *:last-child {
transform: translateY(100%);
}
.panel.open-active > *:last-child {
transform: translateY(0);
}
.panel p {
text-transform: uppercase;
font-family: 'Open Sans', cursive;
text-shadow:0 0 4px rgba(0, 0, 0, 0.72), 0 0 14px rgba(0, 0, 0, 0.45);
font-size: 1em;
}
.panel p:nth-child(2) {
font-size: 3em;
}
.panel.open {
font-size:40px;
flex: 5;
}
这是我的 Javascript 代码:
const panel = document.querySelectorAll(".panels div");
for (let p of panel){
p.addEventListener('click', function(){
p.classList.toggle('panels');
})
}
});
我不知道怎么了,也许我切换错了课程?如果我想切换 css 类 (.panels > *) 我该怎么做?(p.classList.toggle('panels *)?我试过了,还是不行,请帮忙谢谢!
解决方案
在这里你应该提到不带“s”的toggle('panel')
document.addEventListener('DOMContentLoaded', ()=>{
const panel = document.querySelectorAll(".panels div");
for (let p of panel){
p.addEventListener('click', function(){
p.classList.toggle('panel');
})
}
});
html {
box-sizing: border-box;
background:#ffc600;
font-family:'Open Sans';
font-size: 14px;
font-weight: 400;
}
body {
margin: 0;
}
*, *:before, *:after {
box-sizing: inherit;
}
.panels {
min-height:100vh;
overflow: hidden;
display: flex;
}
.panel {
background:#6B0F9C;
box-shadow:inset 0 0 0 5px rgba(255,255,255,0.1);
color:white;
text-align: center;
align-items:center;
/* Safari transitionend event.propertyName === flex */
/* Chrome + FF transitionend event.propertyName === flex-grow */
transition: font-size 0.7s cubic-bezier(0.61,-0.19, 0.7,-0.11), 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;
justify-content: center;
align-items: center;
display: flex;
flex-direction: column;
}
.panel1 {
background-image:url(https://source.unsplash.com/8y8DbWwDTz4/1500x1500);
}
.panel2 {
background-image:url(https://source.unsplash.com/ZQsKyddXezA/1500x1500);
}
.panel3 {
background-image:url(https://source.unsplash.com/cbHtEWXkIdQ/1500x1500);
}
.panel4 {
background-image:url(https://source.unsplash.com/FwiNLpZdKVk/1500x1500);
}
.panel5 {
background-image:url(https://source.unsplash.com/w8TtcStjyWY/1500x1500);
}
.panel > * {
margin:0;
width: 100%;
transition:transform 0.5s;
flex: 1 0 auto;
display: flex;
justify-content: center;
align-items: center;
}
.panel > *:first-child {
transform: translateY(-100%);
}
.panel.open-active > *:first-child {
transform: translateY(0);
}
.panel > *:last-child {
transform: translateY(100%);
}
.panel.open-active > *:last-child {
transform: translateY(0);
}
.panel p {
text-transform: uppercase;
font-family: 'Open Sans', cursive;
text-shadow:0 0 4px rgba(0, 0, 0, 0.72), 0 0 14px rgba(0, 0, 0, 0.45);
font-size: 1em;
}
.panel p:nth-child(2) {
font-size: 3em;
}
.panel.open {
font-size:40px;
flex: 5;
}
<div class="panels">
<div class="panel panel1">
<p>Hey</p>
<p>Let's</p>
<p>Dance</p>
</div>
<div class="panel panel2">
<p>Give</p>
<p>Take</p>
<p>Receive</p>
</div>
<div class="panel panel3">
<p>Experience</p>
<p>It</p>
<p>Today</p>
</div>
<div class="panel panel4">
<p>Give</p>
<p>All</p>
<p>You can</p>
</div>
<div class="panel panel5">
<p>Life</p>
<p>In</p>
<p>Motion</p>
</div>
</div>
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