简单的JS计算器

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简单的JS计算器

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="JSQ.aspx.cs" Inherits="周五的练习Kindeditor3._29.JSQ" %>

<!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>
<title>计算器</title>
<script type="text/javascript">
      var code;
      var oldint = "";
      var last;
      function xianshi(panduan) {
          if (panduan == 1) {
              if (last == "+")
              { Form1.result.value = ""; }
              if (last == "-")
              { Form1.result.value = ""; }
              if (last == "*")
              { Form1.result.value = ""; }
              if (last == "/")
              { Form1.result.value = ""; }
              last = panduan;
              Form1.result.value = Form1.result.value + panduan;
          }

          if (panduan == 2) {
              if (last == "+")
              { Form1.result.value = ""; }
              if (last == "-")
              { Form1.result.value = ""; }
              if (last == "*")
              { Form1.result.value = ""; }
              if (last == "/")
              { Form1.result.value = ""; }
              last = panduan;
              Form1.result.value = Form1.result.value + panduan;
          }

          if (panduan == 3) {
              if (last == "+")
              { Form1.result.value = ""; }
              if (last == "-")
              { Form1.result.value = ""; }
              if (last == "*")
              { Form1.result.value = ""; }
              if (last == "/")
              { Form1.result.value = ""; }
              last = panduan;
              Form1.result.value = Form1.result.value + panduan;
          }
          if (panduan == 4) {
              if (last == "+")
              { Form1.result.value = ""; }
              if (last == "-")
              { Form1.result.value = ""; }
              if (last == "*")
              { Form1.result.value = ""; }
              if (last == "/")
              { Form1.result.value = ""; }
              last = panduan;
              Form1.result.value = Form1.result.value + panduan;
          }
          if (panduan == 5) {
              if (last == "+")
              { Form1.result.value = ""; }
              if (last == "-")
              { Form1.result.value = ""; }
              if (last == "*")
              { Form1.result.value = ""; }
              if (last == "/")
              { Form1.result.value = ""; }
              last = panduan;
              Form1.result.value = Form1.result.value + panduan;
          }
          if (panduan == 6) {
              if (last == "+")
              { Form1.result.value = ""; }
              if (last == "-")
              { Form1.result.value = ""; }
              if (last == "*")
              { Form1.result.value = ""; }
              if (last == "/")
              { Form1.result.value = ""; }
              last = panduan;
              Form1.result.value = Form1.result.value + panduan;
          }
          if (panduan == 7) {
              if (last == "+")
              { Form1.result.value = ""; }
              if (last == "-")
              { Form1.result.value = ""; }
              if (last == "*")
              { Form1.result.value = ""; }
              if (last == "/")
              { Form1.result.value = ""; }
              last = panduan;
              Form1.result.value = Form1.result.value + panduan;
          }
          if (panduan == 8) {
              if (last == "+")
              { Form1.result.value = ""; }
              if (last == "-")
              { Form1.result.value = ""; }
              if (last == "*")
              { Form1.result.value = ""; }
              if (last == "/")
              { Form1.result.value = ""; }
              last = panduan;
              Form1.result.value = Form1.result.value + panduan;
          }
          if (panduan == 9) {
              if (last == "+")
              { Form1.result.value = ""; }
              if (last == "-")
              { Form1.result.value = ""; }
              if (last == "*")
              { Form1.result.value = ""; }
              if (last == "/")
              { Form1.result.value = ""; }
              last = panduan;
              Form1.result.value = Form1.result.value + panduan;
          }
          if (panduan == 0) {
              if (last == "+")
              { Form1.result.value = ""; }
              if (last == "-")
              { Form1.result.value = ""; }
              if (last == "*")
              { Form1.result.value = ""; }
              if (last == "/")
              { Form1.result.value = ""; }
              last = panduan;
              Form1.result.value = Form1.result.value + panduan;
          }
          if (panduan == 16) {
              if (last == "+")
              { Form1.result.value = ""; }
              if (last == "-")
              { Form1.result.value = ""; }
              if (last == "*")
              { Form1.result.value = ""; }
              if (last == "/")
              { Form1.result.value = ""; }
              last = panduan;
              Form1.result.value = Form1.result.value + ".";
          }
          if (panduan == 11) {
              code = "/";
              if (oldint == "")
              { oldint = Form1.result.value; }
              else {
                  oldint = parseFloat(Form1.result.value) / parseFloat(oldint);
              }
              Form1.result.value = oldint;
              last = "/";
          }
          if (panduan == 12) {
              code = "*";
              if (oldint == "")
              { oldint = Form1.result.value; }
              else {
                  oldint = parseFloat(Form1.result.value) * parseFloat(oldint);
              }
              Form1.result.value = oldint;
              last = "*";
          }
          if (panduan == 13) {
              code = "-";
              if (oldint == "")
              { oldint = Form1.result.value; }
              else {
                  oldint = parseFloat(oldint) - parseFloat(Form1.result.value);
              }
              Form1.result.value = oldint;
              last = "-";
          }

          if (panduan == 15) {
              code = "+";
              if (oldint == "")
              { oldint = Form1.result.value; }
              else {
                  oldint = parseFloat(Form1.result.value) + parseFloat(oldint);
              }
              Form1.result.value = oldint;
              last = "+";
          }

          if (panduan == 14) {
              if (code == "/")
              { Form1.result.value = parseFloat(oldint) / parseFloat(Form1.result.value); }
              if (code == "*")
              { Form1.result.value = parseFloat(oldint) * parseFloat(Form1.result.value); }
              if (code == "-")
              { Form1.result.value = parseFloat(oldint) - parseFloat(Form1.result.value); }
              if (code == "+")
              { Form1.result.value = parseFloat(oldint) + parseFloat(Form1.result.value); }
          }

          if (panduan == 17) {
              Form1.result.value = "";
              oldint = "";
              last = "";
          }
      }

      function baoliu() {
          if (Form1.result1.value == "")
          {
              Form1.result1.value = Form1.result.value;
          }
          else {
              if (Form1.result2.value == "")
              {
                  Form1.result2.value = Form1.result.value;
              }
              else
              {
                  if (Form1.result3.value == "")
                  {
                      Form1.result3.value = Form1.result.value;
                  }
              }
          }
      }

      function clear() {
          alert("asdf");
          Form1.result1.value = "";
          Form1.result2.value = "";
          Form1.result3.value = "";
      }
      function qingchu() {
          Form1.result1.value = "";
          Form1.result2.value = "";
          Form1.result3.value = "";
      }
</script>
</head>
<body>
   <form id="Form1" runat="server">
   <table>
   <tr><td colspan="4"><input type="text" name="result" size="44"/></td></tr>
     <tr>
     <td>
     <input type="button" value="1" onclick="xianshi(1);" style="50;height:35"/>
     </td>
     <td>
     <input type="button" value="2" onclick="xianshi(2);" style="50;height:35"/>
     </td>
     <td>
     <input type="button" value="3" onclick="xianshi(3);" style="50;height:35"/>
     </td>
     <td>
     <input type="button" value="/" onclick="xianshi(11);" style="50;height:35"/>
     </td>
     </tr>

     <tr>
     <td>
     <input type="button"   value="4" onclick="xianshi(4);" style="50;height:35"/>
     </td>
     <td>
     <input type="button" value="5" onclick="xianshi(5);" style="50;height:35"/>
     </td>
     <td>
     <input type="button" value="6" onclick="xianshi(6);" style="50;height:35"/>
     </td>
     <td>
     <input type="button" value="*" onclick="xianshi(12);" style="50;height:35"/>
     </td>
     </tr>

     <tr>
     <td>
     <input type="button"   value="7" onclick="xianshi(7);" style="50;height:35"/>
     </td>
     <td>
      <input type="button" value="8" onclick="xianshi(8);" style="50;height:35"/>
     </td>
     <td>
     <input type="button" value="9" onclick="xianshi(9);" style="50;height:35"/>
     </td>
     <td>
     <input type="button" value="-" onclick="xianshi(13);" style="50;height:35"/>
     </td>
     </tr>

     <tr>
     <td>
     <input type="button"   value="0" onclick="xianshi(0);" style="50;height:35"/>
     </td>
     <td>
      <input type="button"   value="=" onclick="xianshi(14);" style="50;height:35"/>
     </td>
     <td>
     <input type="button"   value="." onclick="xianshi(16);" style="50;height:35"/>
     </td>
     <td>
     <input type="button" value="+" onclick="xianshi(15);" style="50;height:35"/>
     </td>
     </tr>
     <tr><td colspan="4"><input type="button"   value="清空" onclick="xianshi(17);" style="50;height:35" /></td></tr>
   </table>
</form>
</body>
</html>

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原文地址：https://www.cnblogs.com/duanlinlin/p/2994381.html