我想做什么:
我想添加一个" walkingMan"当一个元素的类更改为activeCell
时,将图像放在下。我知道如何使用伪类将图像添加到元素的前面或后面,但据我所知,我不能用:below
之类的东西来实现同样的效果。我有没有一种方法可以用于micmic?
我做了什么:
我在每个上部单元格下方添加了图像,并在类更改为activeCell
时使其可见。但我希望找到一个更简单的解决方案。
答案 0 :(得分:2)
您可以在.cell
元素上使用单个伪元素,并在其处于活动状态时在其上放置背景图像。
let activeIndex = 0;
const cells = [...document.querySelectorAll('.cell')];
setInterval(() => {
cells.forEach(cell => {
cell.classList.remove('activeCell')
});
cells[activeIndex].classList.add('activeCell');
activeIndex = activeIndex === cells.length - 1 ? 0 : (activeIndex + 1);
}, 300)

.cell {
display: inline-block;
border: 1px solid black;
margin-bottom: 1.2em;
}
.activeCell {
background-color: lightgrey;
position: relative;
}
.activeCell::after {
content: "";
position: absolute;
width: 1em;
height: 1em;
top: 1.3em;
left: calc(50% - .5em); /* Center the stickman. Position it half of its width before the parent center*/
background-image: url('https://www.shareicon.net/data/512x512/2016/01/17/704754_people_512x512.png');
background-size:cover; /* Scale the stickman to completely cover the background area. */
}

<div>
<div class='top'>
<a class='cell'>One</a>
<a class='cell'>One</a>
<a class='cell'>One</a>
<a class='cell'>One</a>
</div>
<div class='bottom'>
<a class='cell'>One</a>
<a class='cell'>One</a>
<a class='cell'>One</a>
<a class='cell'>One</a>
</div>
</div>
&#13;
答案 1 :(得分:1)
为活动元素添加
.RunManActive
类
//clicking add active Class
$(".RunMan").click(function() {
$(".RunMan").removeClass('RunManActive');
$(this).toggleClass('RunManActive');
});
//timing add active Class
var i=0;
var $elm=$(".Animate");
setInterval(function(){
$elm.removeClass('RunManActive');
$elm.eq(i).toggleClass('RunManActive');
i=$elm.length<=i?0:i+1;
}, 1000);
.RunMan{
width:35px;
height:35px;
background-color:lightgray;
border:3px solid #fff;
float:left;
position: relative;
}
.RunManActive{
background-color:#eee;
border:3px solid lightgray;
}
.RunManActive > div{
width:35px;
height:35px;
position: absolute;
background-image:url(http://www.iconsfind.com/wp-content/uploads/2013/11/Objects-Running-man-icon.png);
background-size:cover;
top:100%;
margin-top:5px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="RunMan"><div></div></div>
<div class="RunMan RunManActive"><div></div></div>
<div class="RunMan"><div></div></div>
<div class="RunMan"><div></div></div>
<div class="RunMan"><div></div></div>
<br><br><br><br><br><br>
<div style=" width:100%">
<div class="Animate RunMan"><div></div></div>
<div class="Animate RunMan "><div></div></div>
<div class="Animate RunMan"><div></div></div>
<div class="Animate RunMan"><div></div></div>
<div class="Animate RunMan"><div></div></div>
答案 2 :(得分:1)
这个怎么样:https://jsfiddle.net/147prwy5/3/
HTML
<div class="cell active">
<a>One</a>
<img src="https://www.shareicon.net/data/512x512/2016/01/17/704754_people_512x512.png" alt="walkingMan" />
</div>
<div class="cell">
<a>One</a>
<img src="https://www.shareicon.net/data/512x512/2016/01/17/704754_people_512x512.png" alt="walkingMan" />
</div>
<div class="cell">
<a>One</a>
<img src="https://www.shareicon.net/data/512x512/2016/01/17/704754_people_512x512.png" alt="walkingMan" />
</div>
<div class="cell active">
<a>One</a>
<img src="https://www.shareicon.net/data/512x512/2016/01/17/704754_people_512x512.png" alt="walkingMan" />
</div>
CSS
.cell {
display: inline-block;
}
.cell a {
border: 1px solid black;
}
.cell.active a {
background-color: lightgrey;
}
.cell img {
width: 20px;
height: 20px;
display: none;
}
.cell.active img {
margin-top: 5px;
width: 20px;
height: 20px;
display: block;
}
答案 3 :(得分:1)
我从未成为::before
和::after
伪类的粉丝,主要是因为我个人在尝试将内容放入Chrome vs IE时会发现一些奇怪的东西(该死的IE!)。由于这里的大多数人都会使用这些伪类提供解决方案(因为这有点像你提出的那样),我想我会使用flexbox和更多div来提供不同的解决方案。
对于下载大小不是最优的,但我确实认为它不是绝对的定位元素,如果方块变大或变小,则很容易将其作为文件顶部的scss变量处理。这个只使用两个值,即框之间的填充和框的大小,因此它应该易于更新和维护。
无论如何,玩得开心!顺便说一句令人敬畏的问题: - )
.blocks {
display: flex;
}
.block {
flex: 0 0 20px;
margin: 0px 5px;
display: flex;
flex-direction:column;
}
.block > .square {
flex: 0 0 20px;
margin: 5px 0px;
background: grey;
}
.block > .space {
flex: 0 0 20px;
margin: 5px 0px;
}
.block.activeCell > .space {
background: green;
}
<div class="blocks">
<div class="block activeCell"><div class="square"></div><div class="space"></div></div>
<div class="block"><div class="square"></div><div class="space"></div></div>
<div class="block"><div class="square"></div><div class="space"></div></div>
<div class="block"><div class="square"></div><div class="space"></div></div>
</div>
<div class="blocks">
<div class="block"><div class="square"></div></div>
<div class="block"><div class="square"></div></div>
<div class="block"><div class="square"></div></div>
<div class="block"><div class="square"></div></div>
</div>
答案 4 :(得分:1)
使用jQuery,您可以在单击时切换该类:
$('.cell').click(function() { //catch clicks on .cell
$('.cell').removeClass('activeCell'); //remove class "activeCell" from all
$(this).addClass('activeCell'); //add class "activeCell" to .cell clicked
});
将position: relative;
应用于.top
和.bottom
:
.top,
.bottom {
position: relative;
}
使用psuedoclass :before
在.activeCell
.activeCell:before {
content: "";
position: absolute;
bottom: -20px;
height: 20px;
width: 20px;
background-image: url("https://www.shareicon.net/data/512x512/2016/01/17/704754_people_512x512.png");
background-size: 20px 20px;
}
删除它:
.walkingMan {
width: 20px;
height: 20px;
display: inline-block
}
而且:
<img src="https://www.shareicon.net/data/512x512/2016/01/17/704754_people_512x512.png" alt="walkingMan" class='walkingMan'/>
要在div .top
和.bottom
之间添加空格,请在它们之间添加<br>
。
$('.cell').click(function() {
$('.cell').removeClass('activeCell');
$(this).addClass('activeCell');
});
.cell {
display: inline-block;
border: 1px solid black;
cursor: pointer;
}
.top,
.bottom {
position: relative;
}
.activeCell {
background-color: lightgrey;
}
.activeCell:before {
content: "";
position: absolute;
bottom: -20px;
height: 20px;
width: 20px;
background-image: url("https://www.shareicon.net/data/512x512/2016/01/17/704754_people_512x512.png");
background-size: 20px 20px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<div>
<div class='top'>
<a class='cell activeCell'>One</a>
<a class='cell'>One</a>
<a class='cell'>One</a>
<a class='cell'>One</a>
</div>
<br>
<div class='bottom'>
<a class='cell'>One</a>
<a class='cell'>One</a>
<a class='cell'>One</a>
<a class='cell'>One</a>
</div>
</div>
答案 5 :(得分:1)
您可以使用 CSS 执行此类操作。使用:target
选择器,您可以将样式应用于需要隐藏/显示的元素。
.container {
display: inline-block;
width: 100px;
height: 200px;
}
.link {
display: block;
width: 100px;
height: 100px;
background: #ccc;
}
.walking-man {
display: none;
width: 100px;
height: 100px;
background: red;
}
#p1:target {
display: block;
}
#p2:target {
display: block;
}
#p3:target {
display: block;
}
#p4:target {
display: block;
}
height: 90px;
float: left;
}
.walking-man img {
width: 100%;
}
.walkin-man:target {
display: block;
}
<div class="container">
<a href="#p1" class="link"></a>
<div id="p1" class="walking-man"></div>
</div>
<div class="container">
<a href="#p2" class="link"></a>
<div id="p2" class="walking-man"></div>
</div>
<div class="container">
<a href="#p3" class="link"></a>
<div id="p3" class="walking-man"></div>
</div>
<div class="container">
<a href="#p4" class="link"></a>
<div id="p4" class="walking-man"></div>
</div>