帮我看看这javascript里面那里错了？怎么计算不出结果？
<html>
<head>
<script language="javascript">
function calcu()
{
var number1=document.form1.number1.value;
var number2=document.form1.number2.value;
var number3=parseFloat(number1)*parseFloat(number2);
document.calc.result.value=total;
}
</script>
</style>
</head>
<body>
<form name="form1" method="post" action="">
拍卖价格
<input name="number1 " type="text" id="number1 ">
购买数量
<input name="number2" type="text" id="number2">
预计总价
<input name="number3" type="text" id="number3">
<input name="number4" type="submit" id="number4" value="确定">
</form>
</body>
</html>
function calcu()
{
var number1=document.form1.number1.value;
var number2=document.form1.number2.value;
var number3=parseFloat(number1)*parseFloat(number2);
//document.calc.result.value=total;
document.form1.number3.value=number3;
}
拍卖价格
购买数量
预计总价
-->
确定
答：正解： function add(val) { var n; n=txt.value+val; txt.value=n; } 详情>>
答：google "java 缓冲池"详情>>
答：百度里搜张孝祥 非常好的视频教程详情>>
