计算器

来源：互联网发布：手游源码交易平台编辑：程序博客网时间：2024/04/29 01:16

Code:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head>
<body>
<table border="1">
<tr>
<td>请输入数字一</td>
<td><input type="text" id="txtFirst" name="txtnum" /></td>
</tr>
<tr>
<td>请输入数字二</td>
<td><input type="text" id="txtSecond" /></td>
</tr>
<tr>
<td>请选择运算符号</td>
<td>
加<input type="button" name="ck1" onclick="sum()" value="+"/>
减<input type="button" name="ck1" onclick="jian()" value="-"/>
乘<input type="button" name="ck1" onclick="cheng()" value="*"/>
除<input type="button" name="ck1" onclick="chu()" value="/"/>
余<input type="button" name="ck1" onclick="yu()" value="%"/>
</td>
</tr>
</table>
</body>
<script>
function sum()
{
var i=parseFloat(document.getElementById('txtFirst').value);
var j=parseFloat(document.getElementById('txtSecond').value);
alert( i + j );
}
function jian()
{
var i=parseFloat(document.getElementById('txtFirst').value);
var j=parseFloat(document.getElementById('txtSecond').value);
alert( i - j );
}
function cheng()
{
var i=parseFloat(document.getElementById('txtFirst').value);
var j=parseFloat(document.getElementById('txtSecond').value);
alert( i * j );
}
function chu()
{
var i=parseFloat(document.getElementById('txtFirst').value);
var j=parseFloat(document.getElementById('txtSecond').value);
alert(i/j);
}
function yu()
{
var i=parseFloat(document.getElementById('txtFirst').value);
var j=parseFloat(document.getElementById('txtSecond').value);
alert( i %j );
}
</script>
</html>