<html>
<head>
<title>
简单计算器
</title>
<script language="javascript">
function compute(op)
{ var num1,num2;
num1=parseFloat(document.myform.txtNum1.value);
num2=parseFloat(document.myform.txtNum2.value);
if (op=="+")
document.myform.txtResult.value=num1+num2 ;
if (op=="-")
document.myform.txtResult.value=num1-num2 ;
if (op=="*")
document.myform.txtResult.value=num1*num2 ;
if (op=="/" && num2!=0)
document.myform.txtResult.value=num1/num2 ; }
</script>
</head>
<body>
<form action="" method="post" name="myform" id="myform">
第一个数:<INPUT name="addButton2" type="button“
id="addButton2" value="" >
<p>
第二个数:<INPUT name="mulButton2" type="button“
id="mulButton2" value="" >
<p>
<INPUT name="divButton1" type="button"
id="divButton1" value=" + " onClick="compute('+')">
<INPUT name="divButton2" type="button"
id="divButton2" value=" - " onClick="compute('-')">
<INPUT name="divbutton3" type="button"
id="divbutton3" value=" * " onClick="compute
('*')" >
<INPUT name="divbutton4" type="button"
id="divbutton4" value=" / " onClick="compute
('/')">
<p>
计算结果:<input name="sumbutton" type="txt"
id="sunbutton" value="" ></form>
</body>
</html>
那个点击运算符就能自动运算到计算结果该怎么写?
<head>
<title>
简单计算器
</title>
<script language="javascript">
function compute(op)
{ var num1,num2;
num1=parseFloat(document.myform.txtNum1.value);
num2=parseFloat(document.myform.txtNum2.value);
if (op=="+")
document.myform.txtResult.value=num1+num2 ;
if (op=="-")
document.myform.txtResult.value=num1-num2 ;
if (op=="*")
document.myform.txtResult.value=num1*num2 ;
if (op=="/" && num2!=0)
document.myform.txtResult.value=num1/num2 ; }
</script>
</head>
<body>
<form action="" method="post" name="myform" id="myform">
第一个数:<INPUT name="addButton2" type="button“
id="addButton2" value="" >
<p>
第二个数:<INPUT name="mulButton2" type="button“
id="mulButton2" value="" >
<p>
<INPUT name="divButton1" type="button"
id="divButton1" value=" + " onClick="compute('+')">
<INPUT name="divButton2" type="button"
id="divButton2" value=" - " onClick="compute('-')">
<INPUT name="divbutton3" type="button"
id="divbutton3" value=" * " onClick="compute
('*')" >
<INPUT name="divbutton4" type="button"
id="divbutton4" value=" / " onClick="compute
('/')">
<p>
计算结果:<input name="sumbutton" type="txt"
id="sunbutton" value="" ></form>
</body>
</html>
那个点击运算符就能自动运算到计算结果该怎么写?
<INPUT name="txtNum2" type="text" id="txtNum2">
<INPUT name="txtResult" type="text" id="txtResult">