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JS实现计算器和相册
1
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650 people have browsed it

相册

实例

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>相册</title>
	<style type="text/css">
		.box{
			width: 500px;
			height: 650px;
			background-color: #e2e2e2;
			border: 1px solid skyblue;
			margin: 20px auto;
			text-align: center;
			color: #636363;
		}
		.box ul{
			margin: 0;
			padding: 0;			
			overflow: hidden;
		}
		.box ul li{
			border: 1px solid skyblue;
			list-style: none;
			float: left;
			margin-left: 20px;
		}
		.box ul li a{
			display: block;
			width: 100px;
			height: 40px;
			line-height: 40px;
			color: #fff;
			text-decoration: none;
			background-color: skyblue;
		}
		.box ul li a:hover{
			font-size: 1.2em;
			background-color: coral;
		}
		.box .pic{
			width: 340px;
			height:350px;
			border: 1px solid skyblue;
			line-height: 1px;
			margin: auto;
			margin-top: 50px;
		}
		.box .pic img{
			width: 100%;
			height: 100%;		
		}
		 #info{
		 	margin:auto;
		 	margin-top: 50px;

			height: 30px;
		}
	</style>
</head>
<body>
	<div class="box">
		<h2>相册</h2>
		<ul>
			<li>
				<a href="../img/1.png" title="《楚乔传》,《花千骨》,《陆贞传奇》..." onclick="changePic(this);return false">赵丽颖</a>
			</li>
			<li><a href="../img/1.png" title="《倚天屠龙》,《花千骨》" onclick="changePic(this);return false">高圆圆</a></li>
			<li><a href="../img/10.png" title="《那年花开月正圆》,《花千骨》" onclick="changePic(this);return false">孙俪</a></li>
		</ul>

		<div class="pic">
			<img src="../img/2.png" alt="" id="img">
		</div>
		<p id="info"></p>
	</div>

	<script type="text/javascript">
		function changePic(pic){
			// 1获取图片和标题
			// 			一定要加上形参pic
			var picimg = pic.href
			var picinfo = pic.title
			var picName = pic.innerHTML
			// innerHTML可以获取标签中的内容

			// 2获取替换的图片和标题
			var img = document.getElementById('img')
			var p = document.getElementById('info')

			// 2 = 1
			img.src = picimg
			// 将名字和标题一起替换到P中
			// js用+ 连接
			p.innerHTML = picName+':'+picinfo
			

		}
	</script>
</body>
</html>

运行实例 »

点击 "运行实例" 按钮查看在线实例

计算器

实例

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style type="text/css">
		.box{
			width: 400px;
			height: 200px;
			background-color: #e2e2e2;
			border: 1px solid skyblue;
			margin: 20px auto;
			text-align: center;
			color: #636363;
		}
		.box3{
			margin:auto;
			margin-top: 20px;
			border: 1px solid skyblue;
			width: 200px;
			height: 35px;
			text-align: left;
			line-height: 35px;
		}
		.box3 p{
			display: inline;
			width: 100%;
			height: 100%;
		}

	</style>
</head>
<body>
	<div class="box">
		<h2>计算器</h2>
		<form class="box2">
			<input type="text" name="opt1" size="10">
			<select name="option">
				<option value="null">請選擇</option>
				<option value="add">+</option>
				<option value="sub">-</option>
				<option value="mul">*</option>
				<option value="div">/</option>
			</select>
			<input type="text" name="opt2" size="10">
			<input type="button" name="button" value="計算" id="btn">
		</form>
		<div class="box3">結果：<p id="placeholder">1111</p></div>
	</div>

	<script type="text/javascript">
		// 获取要用到的操作数
		var opt1 = document.getElementsByName('opt1')[0]
		var opt2 = document.getElementsByName('opt2')[0]
		var opt = document.getElementsByName('option')[0]
		var btn = document.getElementsByName("button")[0]
		var placeholder = document.getElementById("placeholder")

		// 给按钮添加事件
		btn.onclick = function(){
			if(opt1.value.length ==0){
				opt1.focus();
				return false	
			}else if(isNaN(opt1.value)){
				return false
			}else if(opt2.value.length ==0){
				opt2.focus();
				return false
			}else if(isNaN(opt2.value)){
				return false
			}else{
				var data1 = parseFloat(opt1.value)
				var data2 = parseFloat(opt2.value)
			}
			// 以上是判断
			// 先开始进行计算
			var option  = opt.value
			var temp = 0
			var flag = ''
			var result = ''
			switch(option){

				case'null':
				opt.focus;
				return false

				case 'add':
					flag = '+'
					temp = data1 + data2					
					break

				case 'sub':
					flag = '-'
					temp = data1 - data2
					break

				case'mul':
					flag='*'
					temp = data1*data2
					break		

				case 'div':
					flag = '/'
					if (data2 == 0) {
						alert('除数不能为0,请重新输入')
						opt2.focus()
						return false
					} else {
						temp = data1 / data2	
					}					
					break
			}

			// placeholder.innerHTML = data1+''+flag+''+data2+'='+temp
			var str ;
			str = data1+' '+flag+' '+data2 + ' = ' + temp 
		
			placeholder.innerHTML = str
		}
	</script>
</body>
</html>

运行实例 »

点击 "运行实例" 按钮查看在线实例

webwxgetmsgimg(6).jpg

webwxgetmsgimg(3).jpg

webwxgetmsgimg(4).jpg


Correction status：Uncorrected

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