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简单JavaScript代码，计算

2009-04-16 14:33 302 查看

<html>
<head>
<title>Test for computer</title>
<mce:style><!--
.result{font-weight:bold; font-style:color:#FF00CC} /*for element with class="result"*/
#payment{text-decoration:underline;}        /*for element with id="payment"*/
--></mce:style><style mce_bogus="1">.result{font-weight:bold; font-style:color:#FF00CC} /*for element with class="result"*/
#payment{text-decoration:underline;}        /*for element with id="payment"*/</style>
<mce:script type="text/javascript"><!--
function Compute()
{
var a = document.d.a.value;
var b = document.d.b.value;
var c = document.d.c.value;

/*var x = Math.pow(1 + interest, payments);
var monthly = (principal * x * interest) / (x - 1);*/

var aa = document.getElementById("aa");
var bb = document.getElementById("bb");
var cc = document.getElementById("cc");

aa.innerHTML = (a * 2).toFixed(2);
bb.innerHTML = (b * 2).toFixed(2);
cc.innerHTML = (c * 2).toFixed(2);
}
// --></mce:script>
</head>
<body>
<form name="d">
<table>
<tr>
<td><b>Enter Loan Information: </b></td>
</tr>

<tr>
<td>Amount of the loan(any currency): </td>
<td><input type="text" name="a" onchange="Compute();" /></td>
</tr>

<tr>
<td>Annual percentage rate of interest: </td>
<td><input type="text" name="b" onchange="Compute();"</td>
</tr>

<tr>
<td>Repayment period in years: </td>
<td><input type="text" name="c" onchange="Compute();"  /></td>
</tr>

<tr>
<td><input type="button" value="Computer" onchange="Compute();"  /></td>
</tr>

<tr>
<td>Your payment information: </td>
</tr>

<tr>
<td>Your Monthly payment:</td>
<td>$<span class="result" id="aa"> </span></td>
</tr>

<tr>
<td>Your Total payment:</td>
<td>$<span class="result" id="bb"></span></td>
</tr>

<tr>
<td>Your Total interest payments: </td>
<td>$<span class="result" id="cc"></span></td>
</tr>

</table>
</form>
</body>
</html>

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