题目1：实现tabhttp://js.jirengu.com/sinawaxule/1/edit
<!doctype html>
<html>
<head>
<style>
ul,
li {
margin: 0;
padding: 0;
}
li {
list-style: none;
}
.clearfix:after {
content: '';
display: block;
clear: both;
}
.tab {
width: 600px;
margin: 20px auto;
border: 1px solid #ccc;
padding: 20px 10px;
border-radius: 4px;
}
.tab-header {
border-bottom: 1px solid #ccc;
}
.tab-header>li {
float: left;
color: brown;
border-top: 1px solid #fff;
border-left: 1px solid #fff;
border-right: 1px solid #fff;
padding: 10px 20px;
cursor: pointer;
}
.tab-header .active {
border: 1px solid #ccc;
border-bottom-color: #fff;
border-radius: 4px 4px 0 0;
color: #333;
margin-bottom: -1px;
}
.tab-container {
padding: 20px 10px;
}
.tab-container>li {
display: none;
}
.tab-container>.active {
display: block;
}
.box {
height: 1000px;
}
</style>
</head>
<body>
<div class="tab">
<ul class="tab-header clearfix">
<li class="active">选项1</li>
<li>选项2</li>
<li>选项3</li>
</ul>
<ul class="tab-container">
<li class="active">内容1
<ul>
<li></li>
</ul>
</li>
<li>内容2</li>
<li>内容3</li>
</ul>
</div>
<div class="box"></div>
<script>
var tabs = document.querySelectorAll('.tab .tab-header>li')
var panels = document.querySelectorAll('.tab .tab-container>li')
tabs.forEach(function (tab) {
tab.addEventListener('click', function () {
tabs.forEach(function (node) {
node.classList.remove('active')
})
this.classList.add('active')
var index = [].indexOf.call(tabs, this)
panels.forEach(function (node) {
node.classList.remove('active')
})
panels[index].classList.add('active')
})
})
</script>
</body>
</html>
题目2：实现模态框 http://js.jirengu.com/mayujilipa/1/edit
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>modal</title>
<style>
.modal-dialog {
display: none;
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
background: raba(0, 0, 0, 0.8);
}
.modal-dialog .bt {
display: inline-block;
padding: 3px 6px;
border: 1px solid #ccc;
border-radius: 3px;
font-size: 14px;
}
.modal-dialog a {
text-decoration: none;
color: #333;
}
.cover {
/*display: none;*/
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: #000;
opacity: 0.4;
z-index: 99;
}
.modal-dialog .modal-ct {
position: fixed;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
-webkit-transform: translate(-50%, -50%);
width: 400px;
border-radius: 3px;
border: 1px solid #ccc;
background: #fff;
z-index: 100;
}
.modal-dialog .modal-ct .header {
position: relative;
height: 36px;
line-height: 36px;
font-size: 16px;
}
.modal-dialog .modal-ct .header h3 {
margin: 0;
padding-left: 10px;
font-size: 16px;
}
.modal-dialog .modal-ct .header .close {
position: absolute;
right: 10px;
top: 10px;
line-height: 1;
}
.modal-dialog .modal-ct .content {
padding: 10px;
}
.open {
display: block;
}
</style>
</head>
<body>
<div class="btn-group">
<button id="btn-modal">点我1</button>
</div>
<div id="modal-1" class="modal-dialog">
<div class="cover"></div>
<div class="modal-ct">
<div class="header">
<h3>标题</h3>
<a href="#" class="close">x</a>
</div>
<div class="content">
<p>内容</p>
<p>内容</p>
</div>
</div>
</div>
<script>
var btn = document.querySelector('#btn-modal')
modal = document.querySelector('#modal-1')
modalCt = document.querySelector('#modal-1 .modal-ct')
close = document.querySelector('#modal-1 .close')
btn.addEventListener('click', function () {
modal.classList.add('open')
})
close.addEventListener('click', function () {
modal.classList.remove('open')
})
modal.addEventListener('click', function () {
modal.classList.remove('open')
})
modalCt.addEventListener('click', function () {
e.stopPropagation()
})
</script>
</body>
</html>
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