网上订票系统

booking.html:

<!doctype html>
<html>

<head>
	<meta charset="utf-8">
	<title></title>
	<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
	<link rel="stylesheet" type="text/css" href="css/booking.css" />
</head>

<body>
	<!--
			功能需求分析：
			1.城市互换：改变定位，添加动画属性
			2.交换图片沿z轴旋转属性：transform:rotate(deg),添加动画属性
			3.城市选取：由点击元素决定更改的城市应该添加到哪里
		-->
	<div class="wrap">
		<!--主图区-->
		<div class="main">
			<img src="images/bg.jpg">
			<div class="content">
				<span class="before">上海</span>
				<div class="change"></div>
				<span class="before">杭州</span>
			</div>
		</div>
		<!--城市选择区区-->
		<div class="card">
			<a href="javascript:void(0)" class="cancel">取消</a>
			<div class="hot-cities">
				<header>热门城市</header>
				<div class="cities">
					<ul>
						<li>重庆</li>
						<li>广州</li>
						<li>深圳</li>
						<li>西安</li>
						<li>天津</li>
						<li>上海</li>
						<li>成都</li>
						<li>厦门</li>
						<li>长沙</li>
						<li>杭州</li>
						<li>南京</li>
						<li>武汉</li>
						<li>昆明</li>
						<li>大连</li>
						<li>北京</li>
						<li>青岛</li>
						<li>安徽</li>
						<li>海南</li>
						<li>洛阳</li>
						<li>贵州</li>
					</ul>
				</div>
			</div>
		</div>
	</div>
	<script type="text/javascript" src="js/booking.js"></script>
</body>

</html>

booking.css:

body,
div,
ul,
li,
p {
	margin: 0;
	padding: 0;
}

body {
	background-color: rgba(0, 0, 0, .5);
}

.wrap {
	position: absolute;
	top: 50%;
	left: 50%;
	margin-top: -200px;
	margin-left: -250px;
	width: 500px;
	height: 400px;
	background-color: #23b8ff;
	border-radius: 20px;
	overflow: hidden;
}

.main {
	width: 500px;
	height: 400px;
}

.content {
	position: relative;
	width: 100%;
	height: 60px;
	margin-top: 19px;
	border-bottom: 1px solid #ccc;
}

.main img {
	width: 100%;
	height: 270px;
}

.content span {
	position: absolute;
	display: inline-block;
	width: 100px;
	height: 60px;
	text-align: center;
	line-height: 60px;
	font-size: 20px;
	cursor: pointer;
	transition: left 0.3s; //过渡动画
}

.before:first-child,
.after:last-child {
	left: 50px;
}

.before:last-child,
.after:first-child {
	left: 350px;
}

.change {
	position: absolute;
	top: 50%;
	left: 50%;
	margin-left: -15px;
	margin-top: -10px;
	width: 30px;
	height: 20px;
	background: url("../images/change.png") center no-repeat;
	background-size: 100%, 100%;
	border-radius: 50%;
	transition: transform 0.3s;
	cursor: pointer;
	z-index: 10;
}

.card {
	position: absolute;
	top: 0;
	left: 100%;
	width: 500px;
	height: 400px;
	background-color: #fff;
	border-radius: 20px;
	z-index: 100;
}

.card a {
	display: block;
	margin: 20px 0 0 25px;
	text-decoration: none;
	color: #ccc;
	font-size: 14px;
}

.hot-cities {
	width: 100%;
}

header {
	text-align: center;
	margin: 20px;
	font-size: 20px;
}

.cities {
	width: 90%;
	margin: 0 auto;
}

.hot-cities li {
	display: inline-block;
	margin: 8px;
	list-style: none;
	width: 15%;
	height: 40px;
	text-align: center;
	line-height: 40px;
	border: 1px solid #ccc;
	border-radius: 10px;
	cursor: pointer;
}

booking.js:

//获取dom元素
var oChange = document.getElementsByClassName("change")[0],
	oSpan = Array.prototype.slice.call(document.getElementsByTagName("span")),
	oCancel = document.getElementsByClassName("cancel")[0],
	oUl = document.getElementsByTagName("ul")[0],
	oCard = document.getElementsByClassName("card")[0],
	deg = 0, //设置初始角度
	onOff = false, //设置一个开关控制交换
	oActive; //获取当前点击元素
//点击交换事件
oChange.onclick = function () {
	//通过控制类名交换位置
	//forEach(function(){})用来循环数组
	//Array.prototype.slice方法将类数组转换为数组 
	onOff = !onOff;
	oSpan.forEach(function (ele, index) {
		//ele循环遍历的每个元素，index是索引值
		ele.className = onOff ? "after" : "before";
	});
	deg += 180;
	oChange.style.transform = "rotate(" + deg + "deg)";
}
//选项卡功能
//点击城市让卡片出现
oSpan.forEach((ele, index) => {
	ele.onclick = () => {
		oCard.style.left = "0";
		//给被点击元素设置class标记以便后面确定更换城市
		ele.classList.add("active");
		oActive = document.getElementsByClassName("active")[0];
		console.log(oActive)
	}
});
oCancel.onclick = () => {
	oCard.style.left = "100%";
	oActive.classList.remove("active");
}
//点击切换城市应用在li父级绑定事件委托
oUl.addEventListener('click', function (e) {
	e = e || window.event;
	//获取触发事件的事件源
	var target = e.target || e.srcElement;
	if (target.nodeName == "LI") {
		// console.log(target.innerText);
		oCard.style.left = "100%";
		oActive.innerText = target.innerText;
		oActive.classList.remove("active"); //替换后要清除active类名
	}
})

效果图：

效果图

booking.html:

booking.css:

booking.js:

效果图：

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