自写计算器

来源：互联网发布：当女程序员遇到问题时编辑：程序博客网时间：2024/05/22 15:24

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="jisuanqi.aspx.cs" Inherits="jisuanqi" %>

<!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 runat="server">
   <title>计算器</title>
    <script type="text/javascript">
        var numb = 0;
        var jieguo = 0;
        var fu = '';
        function showvalues() {
            document.getElementById('txtScream').value +=(arguments[0]);
        }
        //加
        function plus() {
            equals();
            fu = '+';
            numb = parseFloat(document.getElementById('txtScream').value);
            document.getElementById('txtScream').value = '';
        }
        //等于
        function equals() {
            var txt = document.getElementById('txtScream');
            switch (fu) {
                case '+': txt.value = parseFloat(numb) + parseFloat(txt.value);
                    jieguo = txt.value;
                    break;
                case '-': txt.value = parseFloat(numb) - parseFloat(txt.value);
                    jieguo = txt.value;
                    break;
                case '*': txt.value = parseFloat(numb) * parseFloat(txt.value);
                    jieguo = txt.value;
                    break;
                case '/': txt.value = parseFloat(numb) / parseFloat(txt.value);
                    jieguo = txt.value;
                    break;
                default:
                    break;
            }
            numb = 0;
            fu = '';
        }
        //清空
        function btnCE_onclick() {
            txtScream.value = '';
            numb = 0;
            fu = '';
        }
        //删除
        function btn10_onclick() {
            txtScream.value = txtScream.value.substring(0, txtScream.value.length - 1);
        }
        //减
        function btn18_onclick() {
            equals();
            fu = '-';
            numb = parseFloat(document.getElementById('txtScream').value);
            document.getElementById('txtScream').value = '';
        }
        //乘
        function btn13_onclick() {
            equals();
            fu = '*';
            numb = parseFloat(document.getElementById('txtScream').value);
            document.getElementById('txtScream').value = '';
        }
        //除
        function chu() {
            equals();
            fu = '/';
            numb = parseFloat(document.getElementById('txtScream').value);
            document.getElementById('txtScream').value = '';
        }
    </script>
    <style type="text/css">
input{
width:30px;
height:20px;
text-align:center;
}
#tbCalculator td
{
text-align:center;
vertical-align:middle;
}

        #tbCalculator
        {
            height: 332px;
            width: 298px;
        }

</style>

</head>
<body>
<table id="tbCalculator" border="1" align="center" cellpadding="0"
cellspacing="0" bordercolor="#0066FF">
<tr>
<td height="30" colspan="4" align="center">
<input type="text" name="txtScream" id="txtScream" style="width:180px; border-style:none; text-align:right;" readonly="readonly" /> </td>
</tr>
<tr>
<td height="30" colspan="2">
<input type="button" name="btnCE" id="btnCE" value="C E" style="width:80px;" align="right"; onclick="return btnCE_onclick()" /></td>
<td height="30" colspan="2">
<input type="button" name="btn10" id="btn10" value="Backspace" style="width:80px;" align="right"; onclick="return btn10_onclick()" /></td>
</tr>
<tr>
<td height="30"><input type="button" name="btn7" id="btn7" value="7" onclick="showvalues(7)"/></td>
<td><input type="button" name="btn8" id="btn8" value="8" onclick="showvalues(8)"/></td>
<td><input type="button" name="btn9" id="btn9" value="9" onclick="showvalues(9)"/></td>
<td><input type="button" name="btn6" id="btn6" value="/" onclick="chu()"/></td>
</tr>
<tr>
<td height="30">
<input type="button" name="btn4" id="btn4" value="4" onclick="showvalues(4)"/></td>
<td><input type="button" name="btn5" id="btn5" value="5" onclick="showvalues(5)"/></td>
<td><input type="button" name="btn6" id="btn6" value="6" onclick="showvalues(6)"/></td>
<td><input type="button" name="btn13" id="btn13" value="*" onclick="return btn13_onclick()" /></td>
</tr>
<tr>
<td height="30">
<input type="button" name="btn1" id="btn1" value="1" onclick="showvalues(1)" /></td>
<td><input type="button" name="btn2" id="btn2" value="2" onclick="showvalues(2)"/></td>
<td><input type="button" name="btn3" id="btn3" value="3" onclick="showvalues(3)"/></td>
<td><input type="button" name="btn18" id="btn18" value="-" onclick="return btn18_onclick()" /></td>
</tr>
<tr>
<td height="30"><input type="button" name="btn0" id="btn0" value="0" onclick="showvalues(0)"/></td>
<td><input type="button" name="btndot" id="btndot" value="." onclick="showvalues('.')"/></td>
<td><input name="btn22" type="button" id="btn22" value="=" onclick="equals()" /></td>
<td><input type="button" name="btn23" id="btn23" value="+" onclick="plus()" /></td>
</tr>
</table>