js计算器


<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style type="text/css">
		/* Basic Reset */
* {
	border: none;
	font-family: 'Open Sans', sans-serif;
	margin: 0;
	padding: 0;
}
body {

}
.center {
	background-color: #fff;
	border-radius: 50%;
	height: 600px;
	margin: auto;
	width: 600px;
}
h1 {
	color: #495678;
	font-size: 30px;	
	margin-top: 20px;
	padding-top: 50px;
	display: block;
	text-align: center;
	text-decoration: none;
}
a {
	color: #495678;
	font-size: 30px;	
	display: block;
	text-align: center;
	text-decoration: none;
	padding-top: 20px;
}
form {
	background-color: #495678;
	box-shadow: 4px 4px #3d4a65;
	margin: 40px auto;
	padding: 40px 0 30px 40px;	
	width: 280px;
}
.btn {
	outline: none;
	cursor: pointer;
	font-size: 20px;
	height: 45px;
	margin: 5px 0 5px 10px;
	width: 45px;
}
.btn:first-child {
	margin: 5px 0 5px 10px;
}
.btn, #display, form {
	border-radius: 25px;
}
#display {
	outline: none;
	background-color: #98d1dc;
	box-shadow: inset 6px 6px 0px #3facc0;
	color: #dededc;
	font-size: 20px;
	height: 47px;
	text-align: right;
	width: 165px;
	padding-right: 10px;
	margin-left: 10px;
}
.number {
	background-color: #72778b;
	box-shadow: 0 5px #5f6680;
	color: #dededc;
}
.number:active {
	box-shadow: 0 2px #5f6680;
  	-webkit-transform: translateY(2px);
  	-ms-transform: translateY(2px);
  	-moz-tranform: translateY(2px);
  	transform: translateY(2px);
}
.operator {
	background-color: #dededc;
	box-shadow: 0 5px #bebebe;
	color: #72778b;
}
.operator:active {
	box-shadow: 0 2px #bebebe;
  	-webkit-transform: translateY(2px);
  	-ms-transform: translateY(2px);
  	-moz-tranform: translateY(2px);
  	transform: translateY(2px);
}
.other {
	background-color: #e3844c;
	box-shadow: 0 5px #e76a3d;
	color: #dededc;
}
.other:active {
	box-shadow: 0 2px #e76a3d;
  	-webkit-transform: translateY(2px);
  	-ms-transform: translateY(2px);
  	-moz-tranform: translateY(2px);
	</style>
</head>
<body>
<div class="center">
		<h1>HTML CSS, JavaScript 计算器</h1>
		<a href="https://github.com/guuibayer/simple-calculator" target="_blank"><i class="fa fa-github"></i></a>
		<form name="calculator">
			<input type="button" id="clear" class="btn other" value="C">
			<input type="text" id="display">
				<br>
			<input type="button" class="btn number" value="7" onclick="get(this.value);">
			<input type="button" class="btn number" value="8" onclick="get(this.value);">
			<input type="button" class="btn number" value="9" onclick="get(this.value);">
			<input type="button" class="btn operator" value="+" onclick="get(this.value);">
				<br>
			<input type="button" class="btn number" value="4" onclick="get(this.value);">
			<input type="button" class="btn number" value="5" onclick="get(this.value);">
			<input type="button" class="btn number" value="6" onclick="get(this.value);">
			<input type="button" class="btn operator" value="*" onclick="get(this.value);">
				<br>
			<input type="button" class="btn number" value="1" onclick="get(this.value);">
			<input type="button" class="btn number" value="2" onclick="get(this.value);">
			<input type="button" class="btn number" value="3" onclick="get(this.value);">
			<input type="button" class="btn operator" value="-" onclick="get(this.value);">
				<br>
			<input type="button" class="btn number" value="0" onclick="get(this.value);">
			<input type="button" class="btn operator" value="." onclick="get(this.value);">
			<input type="button" class="btn operator" value="/" onclick="get(this.value);">			
			<input type="button" class="btn other" value="=" onclick="calculates();">
		</form>
	</div>
	<script type="text/javascript">
	// 清除显示
	document.getElementById("clear").addEventListener("click",function(){
		document.getElementById("display").value="";
	})	
	// 接收值
	function get(value){
		document.getElementById("display").value+=value;
	}
	function calculates(){
		var result = 0;
		result = document.getElementById("display").value;
		document.getElementById("display").value="";
		document.getElementById("display").value=eval(result);
	};
	</script>	
</body>
</html>

posted @ 2019-01-02 12:23  大天狗子  阅读(180)  评论(0编辑  收藏  举报