<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script>
<title>加减乘除运算</title>
</head>
<body>
<h1 align="center">加减乘除运算</h1>
<div id="" align="center">
数值A：<input type="number" id="a" /> </br>
数值B：<input type="number" id="b" /> </br>
结果：<input type ="number" id="c"> </br>
<input type="button" value="加" οnclick="jia()">
<input type="button" value="减" οnclick="jian()" >
<input type="button" value="乘" οnclick="cheng()">
<input type="button" value="除" οnclick="chu()">
</div>
</body>
<script type="text/javascript">
function jia(){//加法
var a=document.getElementById('a').value;
var b=document.getElementById('b').value;
var c=document.getElementById('c');
c.value=Number(a)+Number(b);
}
function jian(){//减法
var a=document.getElementById('a').value;
var b=document.getElementById('b').value;
var c=document.getElementById('c');
c.value=Number(a)-Number(b);
}
function cheng(){//乘法
var a=document.getElementById('a').value;
var b=document.getElementById('b').value;
var c=document.getElementById('c');
c.value=Number(a)*Number(b);
}
function chu(){//除法
var a=document.getElementById('a').value;
var b=document.getElementById('b').value;
var c=document.getElementById('c');
c.value=Number(a)/Number(b);
}
</script>
</html>
