我正试图从一个名为ValuationChoice的html输入框中获取一个数值（标记为作业值），并将其传递给一个Javascript函数（get permit_Price），在该函数中，它将通过循环传递嵌入ValuationChoice的值来获得许可成本。无论我在ValuationChoice输入框中键入什么，结果值都将保持为0。任何关于我如何做这项工作的建议都将不胜感激。提前谢谢！
function GetPermit_Price() {
var PermitCost = 0;
var theForm = document.forms["cakeform"];
var Valuation =
theForm.elements["ValuationChoice"];
if (Valuation > 0 && Valuation <= 1000) {
PermitCost = 0;
}
if (Valuation > 1001 && Valuation <= 50000) {
PermitCost = (((Valuation - 1000) / 1000) * 5.50) + 25;
}
if (Valuation > 50001 && Valuation <= 100000) {
PermitCost = (((Valuation - 50000) / 1000) * 4.50) + 294.50;
}
if (Valuation > 100001 && Valuation < 500000) {
PermitCost = (((Valuation - 100000) / 1000) * 3.50) + 519.50;
}
if (Valuation > 500001) {
PermitCost = (((Valuation - 500000) / 1000) * 2.25) + 1919.50;
}
return PermitCost;
}
function calculateTotal() {
var cakePrice = GetPermit_Price() + 5 + 10.00;
var divobj7 = document.getElementById('permitFee');
divobj7.style.display = 'block';
divobj7.innerHTML = "Permit Fee: $" +
GetPermit_Price();
}
function hideTotal() {
var divobj = document.getElementById('totalPrice');
divobj.style.display = 'none';
}<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0
Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-
strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Cake Form</title>
<script type="text/javascript" src="js/formcalculations.js"></script>
<link href="styles/cakeform.css" rel="stylesheet" type="text/css" />
</head>
<body onload='hideTotal()'>
<div id="wrap">
<form action="" id="cakeform" onsubmit="return
false;">
<div>
<div class="cont_order">
<fieldset>
<legend>Calculate Permit</legend>
<label>Job Value</label>
<input type="text" id="ValuationChoice" name='ValuationChoice' />
<p>
</p>
<div id="permitFee"></div>
<br/>
<br/>
<div id="totalPrice"></div>
<input type='submit' id='submit' value='Calculate Permit' onclick="calculateTotal()" />
</fieldset>
</div>
</div>
</form>
</div>
<!--End of wrap-->
</body>
</html>最佳答案
值是输入字段，而不是它的值。
尝试：
var Valuation = theForm.elements["ValuationChoice"].value;