JavaScript脚本——简单运算

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<html>
<HEAD>
<SCRIPT language = "JavaScript">
function 加法( )
{
var numb1= document.qwe.num1.value;
var numb2= document.qwe.num2.value;
var total=parseFloat(numb1)+parseFloat(numb2);
document.qwe.getAnswer.value=total;
alert(total);
}

function 减法( )
{
var numb1= document.qwe.num1.value;
var numb2= document.qwe.num2.value;
var total=parseFloat(numb1)-parseFloat(numb2);
document.qwe.getAnswer.value=total;
alert(total);
}
function 乘法( )
{
var numb1= document.qwe.num1.value;
var numb2= document.qwe.num2.value;
var total=parseFloat(numb1)*parseFloat(numb2);
document.qwe.getAnswer.value=total;
alert(total);
}
function 除法( )
{
var numb1= document.qwe.num1.value;
var numb2= document.qwe.num2.value;
var total=parseFloat(numb1)/parseFloat(numb2);
document.qwe.getAnswer.value=total;
alert(total);
}
</SCRIPT>
</HEAD>
<div align="center">
<br/><br/>
<body>
<form name="qwe" method="post" target=_top onSubmit="return">
<input name="num1" type="text" > <br/><br/>
<input name="num2" type="text" > <br/><br/>
<INPUT name="getAnswer" TYPE="button" onClick="加法( )" value="加法运算">
<INPUT name="getAnswer" TYPE="button" onClick="减法( )" value="减法运算"><br/><br/>
<INPUT name="getAnswer" TYPE="button" onClick="乘法( )" value="乘法运算">
<INPUT name="getAnswer" TYPE="button" onClick="除法( )" value="除法运算">
</body>
</html>

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