所以我有4个不同的div，其中有按钮，我试图设置，所以只要点击其中一个按钮，它就会与页面上的其他div重叠。
我知道它与z-index和div的定位有关但我想它需要添加到Jquery而不是CSS？
我已经检查了以前的代码，其中div垂直重叠。这是代码：
$('#divleft, #divmid, #divright').toggle(function () {
var cfg = {height:'200', width:'100%'};
$(this).css({'z-index':100});
var pct = $(this).css('left').split('p')[0]/$(document).width();
if(pct <= .33 && pct > 0){
cfg.left = '0';
$(this).data('oldLeft', "33%");
} else if(pct <= .66 && pct > .33) {
cfg.left = '0';
$(this).data('oldLeft', "66%");
}
$(this).animate(cfg)
}, function () {
var cfg= {height:'200', width:'33%', 'z-index':1};
if ($(this).data('oldLeft')) {
console.log($(this).data('oldLeft'));
cfg.left = $(this).data('oldLeft');
}
$(this).animate(cfg)
})#divleft {
width:33.3%;
height:200px;
background:#ccc;
z-index: 1;
margin-top: 10px;
position: absolute;
left:0;
}
#divmid {
width:33.3%;
height: 200px;
background: #696;
margin-top: 10px;
z-index: 1;
position:absolute;
left:33%;
}
#divright {
width:33.3%;
height:200px;
background:#000;
margin-top: 10px;
z-index: 1;
position:absolute;
left:66%;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="divleft"><p>Click Me!</p></div>
<div id="divmid"></div>
<div id="divright"></div>
这段代码的作用是它使用100％的垂直宽度重叠div。我只是想知道如果要横向重叠div，你会怎么做。
到目前为止，我的代码是：
html, body {
width: 80%;
margin: 0 auto;
}
head {
text-align:left;
}
head, img {
width: 350px;
height: 100px;
float: left;
margin-bottom: 1%;
}
.container {
width: 100%;
height: 100%;
margin: 0 auto;
}
button {
background-color: #cccccc;
color: #000000;
cursor: pointer;
padding: 18px;
width: 100%;
border: none;
text-align: left;
padding-left: 15%;
outline: none;
font-size: 17px;
transition: 0.4s;
margin-top: 2%;
}
.icon {
width: 25px;
height: 25px;
padding-right: 15%;
float: right;
}
button.accordion.active, button.accordion:hover {
background-color: #ddd;
}<div class="container">
<div id="first">
<button><h3>Random <img class ="icon" src="infoicon.png"></h3></button>
</div>
<div id="second">
<button><h3>Random <img class ="icon" src="infoicon.png"></h3></button>
</div>
<div id="third">
<button><h3>Random <img class ="icon" src="infoicon.png"></h3></button>
</div>
<div id="fourth">
<button><h3>Random <img class ="icon" src="infoicon.png"></h3></button>
</div>
<div id="last">
<button><h3>Random <img class ="icon" src="infoicon.png"></h3></button>
</div>
</div>
谢谢！
答案 0 :(得分：0)
[编辑]：你在关闭html文档的body标签之前包含jquery，然后你写下你的javascript。如下所示：
<body>
<!-- Here goes your page content -->
<!-- Here you include the jquery and any js you may need -->
<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<!-- Here goes custom jquery code -->
<script>
$('.btn').click( function(){
$(this).parent().addClass("active")
})
</script>
</body>
我建议您检查Stackoverflow规则： https://meta.stackexchange.com/questions/5234/how-does-accepting-an-answer-work?rq=1
以下是您问题的简化解决方案：
$('.btn').click( function(){
$(this).parent().addClass("active")
}).elements-container {
position: relative;
}
.element {
float: left;
width: 25%;
background-color: grey;
text-align: center;
padding: 50px 0;
}
.element.active {
position: absolute;
top: 0;
left: 0;
width: 100%;
background-color: blue
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="elements-container">
<div class="element">
<button class="btn">Button 1</button>
</div>
<div class="element">
<button class="btn">Button 2</button>
</div>
<div class="element">
<button class="btn">Button 3</button>
</div>
<div class="element">
<button class="btn">Button 4</button>
</div>
</div>
答案 1 :(得分：0)
我认为你想要得到它与相对高度和绝对定位有关，而不仅仅与z-index属性有关。
单击元素div后，必须覆盖父元素。为此，您应将容器position: relative属性和增长元素position: absolute以及height和width置于100％并定位top和{ {1}}与父项重合（到0）。该按钮位于div（left）内，因此它也必须是#first, #second, #third, #last
最后你只需设置height: 100%以确保当前按钮重叠并覆盖显示的其他按钮。
z-index$('.container div').click(function(event){
$(this).toggleClass('active');
})html, body{
width: 80%;
margin: 0 auto;
}
head{
text-align:left;
}
head, img{
width: 350px;
height: 100px;
float: left;
margin-bottom: 1%;
}
.container{
width: 100%;
height: 100%;
margin: 0 auto;
position: relative;
}
button{
background-color: #cccccc;
color: #000000;
cursor: pointer;
padding: 18px;
width: 100%;
border: none;
text-align: left;
padding-left: 15%;
outline: none;
font-size: 17px;
margin-top: 2%;
position: relative;
}
button h3{
display: flex;
justify-content: space-around;
align-items: center;
}
.icon {
height: 2.5em;
width: 1.7em;
float: right;
}
.icon {
background-image: url(https://cdn.sstatic.net/Sites/stackoverflow/img/sprites.svg?v=1b3cdae197be);
}
.container div.active{
height: 100%;
background-color: white;
position:absolute;
top:0;
left:0;
width: 100%;
z-index: 2;
}
.container div.active button{
height: 100%;
}
#first,#second,#third,#fourth,#last{
}
答案 2 :(得分：0)
很好的解决方案，并感谢您的快速反应！只是想知道我在哪里放置我的jquery代码？
$('.container div').click(function(event){
$(this).toggleClass('active');
})html, body{
width: 80%;
margin: 0 auto;
}
head{
text-align:left;
}
head, img{
width: 350px;
height: 100px;
float: left;
margin-bottom: 1%;
}
.container{
width: 100%;
height: 100%;
margin: 0 auto;
position: relative;
}
button{
background-color: #cccccc;
color: #000000;
cursor: pointer;
padding: 18px;
width: 100%;
border: none;
text-align: left;
padding-left: 15%;
outline: none;
font-size: 17px;
margin-top: 2%;
position: relative;
}
button h3{
display: flex;
justify-content: space-around;
align-items: center;
}
.icon {
height: 2.5em;
width: 1.7em;
float: right;
}
.icon {
background-image: url(https://cdn.sstatic.net/Sites/stackoverflow/img/sprites.svg?v=1b3cdae197be);
}
.container div.active{
height: 100%;
background-color: white;
position:absolute;
top:0;
left:0;
width: 100%;
z-index: 2;
}
.container div.active button{
height: 100%;
}
#first,#second,#third,#fourth,#last{
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="container">
<div id="first">
<button><h3>Random <div class ="icon" /></h3></button>
</div>
<div id="second">
<button><h3>Random <div class ="icon" /></h3></button>
</div>
<div id="third">
<button><h3>Random <div class ="icon" /></h3></button>
</div>
<div id="fourth">
<button><h3>Random <div class ="icon" /></h3></button>
</div>
<div id="last">
<button><h3>Random <div class ="icon" /></h3></button>
</div>
</div>