<!DOCTYPE html>
<html><head><title>test</title><meta charset="GBK"><style>*{margin:0;padding:0;}.clearfix:after{content:".";display:block;height:0px;clear:both;visibility:hidden;}* html .clearfix{height:1%;}body{font-size:12px;font-family:arial;text-align:center;}#calculator{margin:0 auto;width:260px;height:250px;background:#efecdc;border:2px solid #0000ff;}#caltitle{height:30px;color:#fff;padding-left:30px;line-height:30px;background:#0000ff;text-align:left;font-size:16px;font-weight:700; }#calinput{height:30px;margin-top:5px; }#inputcont{height:20px;margin:5px 10px;width:240px;text-align:right;}#caloperator{width:240x;margin:5px 10px;}.cancelOp{width:120px;float:left;height:25px;color:red;}.button{width:48px;height:30px;float:left;color:blue;margin:2px 0px;}#operator{color:red;} </style><script src="jquery-1.6.2.min.js"></script><script>$(document).ready(function(){var firstNum=0;var secondNum=0;var opeFlag=""; //backspace$("#backspace").live("click",function(){if($("#inputcont").val()!=""){$("#inputcont").val($("#inputcont").val().slice(0,-1));}});//clearall input content$("#clear").live("click",function(){if($("#inputcont").val()!=""){$("#inputcont").val("");}});//input number$("#number").live('click',function(){var el=$(this);$("#inputcont").val($("#inputcont").val()+el.val());});//input operator$("#operator").live("click",function(){var el=$(this);switch(el.val()){case "+":first=parseFloat($("#inputcont").val());$("#inputcont").val("");opeFlag="+";break;case "-":first=parseFloat($("#inputcont").val());$("#inputcont").val("");opeFlag="-";break;case "*":first=parseFloat($("#inputcont").val());$("#inputcont").val("");opeFlag="*";break;case "/":first=parseFloat($("#inputcont").val());$("#inputcont").val("");opeFlag="/";break;case "sqrt":first=parseFloat($("#inputcont").val());$("#inputcont").val(Math.sqrt(first));break;case "%":first=parseFloat($("#inputcont").val());$("#inputcont").val(first/100);break;case "1/x":first=parseFloat($("#inputcont").val());if(first==0){$("#inputcont").val("除数不能为0");} $("#inputcont").val(1/first); break; case "+/-":var content=$("#inputcont").val();if(content.substr(0,1)=="-"){$("#inputcont").val($("#inputcont").val().slice(1));}else{$("#inputcont").val("-"+$("#inputcont").val());} break;}}); $("#equal").live("click",function(){second=parseFloat($("#inputcont").val());switch(opeFlag){case "+":$("#inputcont").val(first+second);break;case "-":$("#inputcont").val(first-second);break; case "*":$("#inputcont").val(first*second);break; case "/":$("#inputcont").val(first/second);break; } }); }); </script></head><body><div id="calculator"><div id="caltitle">计算器</div><div id="calinput"><input type="text" id="inputcont"></div><div id="caloperator" class="clearfix"><input type="button" value="BackSpace" id="backspace" class="cancelOp"><input type="button" value="C" id="clear" class="cancelOp"><input type="button" value="7" id="number" class="button"><input type="button" value="8" id="number" class="button"><input type="button" value="9" id="number" class="button"><input type="button" value="/" id="operator" class="button"><input type="button" value="sqrt" id="operator" class="button"> <input type="button" value="4" id="number" class="button"><input type="button" value="5" id="number" class="button"><input type="button" value="6" id="number" class="button"><input type="button" value="*" id="operator" class="button"><input type="button" value="%" id="operator" class="button"> <input type="button" value="1" id="number" class="button"><input type="button" value="2" id="number" class="button"><input type="button" value="3" id="number" class="button"><input type="button" value="-" id="operator" class="button"><input type="button" value="1/x" id="operator" class="button"> <input type="button" value="0" id="number" class="button"><input type="button" value="+/-" id="operator" class="button"><input type="button" value="." id="number" class="button"><input type="button" value="+" id="operator" class="button"><input type="button" value="=" id="equal" class="button"> </div></div></body></html>