<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="jisuanqi.WebForm1" %>
<!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"> <title>简单计算器</title> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <style type="text/css"> body { font-size: 12px; font-family: Arial, Georgia, "Times New Roman" , Times, serif; color: #555; text-align: center; background-color: #e2e2e2; } h6 { margin: 0; font-size: 12px; } #calculator { width: 240px; height: auto; overflow: hidden; margin: 10px auto; border: #fff 1px solid; padding-bottom: 10px; background-color: #f2f2f2; } #calculator div { clear: both; } #calculator ul { padding: 0; margin: 5px 14px; border: #fff 1px solid; height: auto; overflow: hidden; } #calculator li { list-style: none; float: left; width: 32px; height: 32px; margin: 5px; display: inline; line-height: 32px; font-size: 14px; background-color: #eaeaea; } #calculator li.tool { background-color: #e2e2e2; } #calculator li:hover { background-color: #f9f9f9; cursor: pointer; } #calculator li:active { background-color: #fc0; cursor: pointer; } #calculator li.tool:active { background-color: #d8e8ff; cursor: pointer; } #calcu-head { text-align: left; padding: 10px 15px 5px; } span.imyeah { float: right; color: #ccc; } span.imyeah a { color: #ccc; } .screen { width: 200px; height: 24px; line-height: 24px; padding: 4px; border: #e6e6e6 1px solid; border-bottom: #f2f2f2 1px solid; border-right: #f2f2f2 1px solid; margin: 10px auto; direction: ltr; text-align: right; font-size: 16px; color: #999; } #calcu-foot { text-align: left; padding: 10px 15px 5px; height: auto; overflow: hidden; } span#note { float: left; width: 210px; height: auto; overflow: hidden; color: red; } span.welcome { clear: both; color: #999; } span.welcome a { float: right; color: #999; } </style> <script type="text/javascript"> var num = 0, result = 0, numshow = "0"; var operate = 0; //判断输入状态的标志 var calcul = 0; //判断计算状态的标志 var quit = 0; //防止重复按键的标志 function command(num) { var str = String(document.calculator.numScreen.value); //获得当前显示数据 str = (str != "0") ? ((operate == 0) ? str : "") : ""; //如果当前值不是"0"，且状态为0，则返回当前值，否则返回空值; str = str + String(num); //给当前值追加字符 document.calculator.numScreen.value = str; //刷新显示 operate = 0; //重置输入状态 quit = 0; //重置防止重复按键的标志 } function dzero() { var str = String(document.calculator.numScreen.value); str = (str != "0") ? ((operate == 0) ? str + "00" : "0") : "0"; //如果当前值不是"0"，且状态为0，则返回当str+"00"，否则返回"0"; document.calculator.numScreen.value = str; operate = 0; } function dot() { var str = String(document.calculator.numScreen.value); str = (str != "0") ? ((operate == 0) ? str : "0") : "0"; //如果当前值不是"0"，且状态为0，则返回当前值，否则返回"0"; for (i = 0; i <= str.length; i++) { //判断是否已经有一个点号 if (str.substr(i, 1) == ".") return false; //如果有则不再插入 } str = str + "."; document.calculator.numScreen.value = str; operate = 0; } function del() { //退格 var str = String(document.calculator.numScreen.value); str = (str != "0") ? str : ""; str = str.substr(0, str.length - 1); str = (str != "") ? str : "0"; document.calculator.numScreen.value = str; } function clearscreen() { //清除数据 num = 0; result = 0; numshow = "0"; document.calculator.numScreen.value = "0"; } function plus() { //加法 calculate(); //调用计算函数 operate = 1; //更改输入状态 calcul = 1; //更改计算状态为加 } function minus() { //减法 calculate(); operate = 1; calcul = 2; } function times() { //乘法 calculate(); operate = 1; calcul = 3; } function divide() { //除法 calculate(); operate = 1; calcul = 4; } function persent() { //求余 calculate(); operate = 1; calcul = 5; } function equal() { calculate(); //等于 operate = 1; num = 0; result = 0; numshow = "0"; } // function calculate() { numshow = Number(document.calculator.numScreen.value); if (num != 0 && quit != 1) { //判断前一个运算数是否为零以及防重复按键的状态 switch (calcul) { //判断要输入状态 case 1: result = num + numshow; break; //计算"+" case 2: result = num - numshow; break; //计算"-" case 3: result = num * numshow; break; case 4: if (numshow != 0) { result = num / numshow; } else { document.getElementById("note").innerHTML = "被除数不能为零！"; setTimeout(clearnote, 4000) } break; case 5: result = num % numshow; break; } quit = 1; //避免重复按键 } else { result = numshow; } numshow = String(result); document.calculator.numScreen.value = numshow; num = result; //存储当前值 } function clearnote() { //清空提示 document.getElementById("note").innerHTML = ""; } </script> </head> <body> <div id="calculator"> <div id="calcu-head"> <center> 简单的计算器</center> </div> <form name="calculator" action="" method="get"> <div id="calcu-screen"> <!--配置显示窗口，使用onfocus="this.blur();"避免键盘输入--> <input type="text" name="numScreen" class="screen" value="0" onfocus="this.blur();" /> </div> <div id="calcu-btn"> <ul> <!--配置按钮--> <li onclick="command(7)">7</li> <li onclick="command(8)">8</li> <li onclick="command(9)">9</li> <li class="tool" onclick="del()">←</li> <li class="tool" onclick="clearscreen()">C</li> <li onclick="command(4)">4</li> <li onclick="command(5)">5</li> <li onclick="command(6)">6</li> <li class="tool" onclick="times()">×</li> <li class="tool" onclick="divide()">÷</li> <li onclick="command(1)">1</li> <li onclick="command(2)">2</li> <li onclick="command(3)">3</li> <li class="tool" onclick="plus()">+</li> <li class="tool" onclick="minus()">-</li> <li onclick="command(0)">0</li> <li onclick="dzero()">00</li> <li onclick="dot()">.</li> <li class="tool" onclick="persent()">%</li> <li class="tool" onclick="equal()">=</li> </ul> </div> <div id="calcu-foot"> <span id="note"></span><span class="welcome">欢迎使用javascript计算器！</span> </div> </form> </div> </body> </html>