其他单选按钮在使用 Javascript 函数后无法点击 select 某些基于 if 语句的单选按钮

Question

我正在开发汽车服务预订系统，共有三种不同的车辆可供选择。我正在尝试将其编码为如果列出了一定数量的乘客，车辆会自动切换到可容纳更多人并禁用第一辆车的位置。

我已经做到了，但是有问题。我使用数组和函数来定义乘客数量。然后我使用一个变量来添加这些函数吐出的值以创建乘客总数。然后我设置了一个 if 语句来说明如果值大于四，更改为这个单选输入并禁用第一个。

发生这种情况时出现问题我不再能够select第三种车辆选项，我不知道为什么。

我还尝试将总乘客值设置为如果小于五，第一辆车自动 selected。这也没有用。

最终我希望它的行为方式是，如果超过 14 名乘客被 selected，用户会收到错误消息（这工作正常）。如果 selected 的乘客少于 5 人，则第一辆车 selected。如果超过 4 名乘客 selected，则第二辆车 selected 仍然可以选择第三辆车。如果超过 8 名乘客 selected，第一辆车和第三辆车都被禁用。

希望我的代码没有格式错误。我是 Javascript 的新手，一直在拼凑教程。这是无法正常工作的表单部分的 jsfiddle。

这里是 Javascript 代码：

var adults_teenagers2 = new Array();
adults_teenagers2["1"] = 1;
adults_teenagers2["2"] = 2;
adults_teenagers2["3"] = 3;
adults_teenagers2["4"] = 4;
adults_teenagers2["5"] = 5;
adults_teenagers2["6"] = 6;
adults_teenagers2["7"] = 7;
adults_teenagers2["8"] = 8;
adults_teenagers2["9"] = 9;
adults_teenagers2["10"] = 10;
adults_teenagers2["11"] = 11;
adults_teenagers2["12"] = 12;
adults_teenagers2["13"] = 13;
adults_teenagers2["14"] = 14;

function AmountAdultsTeenagers() {
var AdultsTeenagersNumberAmount = 0;
var theForm = document.forms["resForm"];
var AdultsTeenagersNumber = theForm.elements["adults_teenagers"];
AdultsTeenagersNumberAmount = adults_teenagers2[AdultsTeenagersNumber.value];
return AdultsTeenagersNumberAmount;
}

var children2 = new Array();
children2["0"] = 0;
children2["1"] = 1;
children2["2"] = 2;
children2["3"] = 3;
children2["4"] = 4;
children2["5"] = 5;
children2["6"] = 6;
children2["7"] = 7;
children2["8"] = 8;

function Amountchildren() {
var childrenNumberAmount = 0;
var theForm = document.forms["resForm"];
var childrenNumber = theForm.elements["children"];
childrenNumberAmount = children2[childrenNumber.value];
return childrenNumberAmount;
}

var infants2 = new Array();
infants2["0"] = 0;
infants2["1"] = 1;
infants2["2"] = 2;
infants2["3"] = 3;
infants2["4"] = 4;
infants2["5"] = 5;
infants2["6"] = 6;
infants2["7"] = 7;
infants2["8"] = 8;

function Amountinfants() {
var infantsNumberAmount = 0;
var theForm = document.forms["resForm"];
var infantsNumber = theForm.elements["infants"];
infantsNumberAmount = infants2[infantsNumber.value];
return infantsNumberAmount;
}

function calculateTotal() {
var over = AmountAdultsTeenagers() + Amountchildren() + Amountinfants();
if(over>'14')
{
alert('Sorry, no vehicle can accomodate more than 14 passengers.');
document.getElementById("firstPageSubmit").disabled = true;

}
else {
document.getElementById("firstPageSubmit").disabled = false;
}
if(over<'5') {
document.getElementById("towncar").checked = true;
}
if(over>'4')
{
document.getElementById("towncar").disabled = true;
document.getElementById("stretch_limousine").disabled = false;
document.getElementById("passenger_van").checked = true;
}
else {document.getElementById("towncar").disabled = false;
}
}

和 HTML：

<form method="post" class="res_form" id="resForm" name="res_form" onSubmit="return quoteCheck();">
<ul>
    <li id="steps">Step 1 of 3 - Select Type of Service/Get Quote</li>
    <li class="form_notice"><span>Reservations must be at least 48 hrs prior for towncars and 72 hrs for any other vehicle.</span></li>
    <li><fieldset class="res_form_fs" id="passengers">
    <legend>Passengers:</legend>
<label for="adults_teenagers" class="selectLabel">Adults/Teenagers:
        <select name="adults_teenagers" id="adults_teenagers" onchange="calculateTotal()">
            <option value="1">1</option>
            <option value="2">2</option>
            <option value="3">3</option>
            <option value="4">4</option>
            <option value="5">5</option>
            <option value="6">6</option>
            <option value="7">7</option>
            <option value="8">8</option>
            <option value="9">9</option>
            <option value="10">10</option>
            <option value="11">11</option>
            <option value="12">12</option>
            <option value="13">13</option>
            <option value="14">14</option>
        </select></label>
<label for="children" class="selectLabel">Children:
        <select name="children" id="children" onchange="calculateTotal()">
            <option value="0">None</option>
            <option value="1">1</option>
            <option value="2">2</option>
            <option value="3">3</option>
            <option value="4">4</option>
            <option value="5">5</option>
            <option value="6">6</option>
            <option value="7">7</option>
            <option value="8">8</option>
        </select></label>
<label for="infants" class="selectLabel">Infants:
        <select name="infants" id="infants" onchange="calculateTotal()">
            <option value="0">None</option>
            <option value="1">1</option>
            <option value="2">2</option>
            <option value="3">3</option>
            <option value="4">4</option>
            <option value="5">5</option>
            <option value="6">6</option>
            <option value="7">7</option>
            <option value="8">8</option>
        </select></label>
    </fieldset>
    </li>
    <li>
    <fieldset class="res_form_fs">
    <legend>Select Vehicle:</legend>
        <p class="radioT"><input type="radio" value="Towncar" onclick="calculateTotal()" name="vehicle" id="towncar" class="radio" unchecked /></p><p class="nonradioT"><span class="radioOption"><label for="towncar">Towncar</label></span></p><br />
        <p class="radioT"><input type="radio" value="Passenger Van" onclick="calculateTotal()" name="vehicle" id="passenger_van" class="radio" unchecked /></p><p class="nonradioT"><span class="radioOption"><label for="passenger_van">Passenger Van</label></span></p><br />
        <p class="radioT"><input type="radio" value="Stretch Limousine" onclick="calculateTotal()" name="vehicle" id="stretch_limousine" class="radio" unchecked /></p><p class="nonradioT"><span class="radioOption"><label for="stretch_limousine">Stretch Limousine</label></span></p>
    </fieldset>
    </li>
    <li><input name="submit" type="submit" id="firstPageSubmit" class="ressubmitButton" value="Continue to Make Reservation" /></li>
    </ul>
    </form>

Answer 1

在这里，我将所有 select 选项的名称更改为相同，现在可以使用了。请在下面的 JSFiddle 中查看：

<select name="adults_teenagers">

http://jsfiddle.net/ketan156/cthbg27h/8/

编辑：

if 条件发生变化：以下是新的 JSFiddle：

http://jsfiddle.net/ketan156/cthbg27h/10/

还好吗？据我了解你喜欢得到它。

根据你的需要我编辑了 JSFiddle:

http://jsfiddle.net/ketan156/cthbg27h/11/

其他单选按钮在使用 Javascript 函数后无法点击 select 某些基于 if 语句的单选按钮

Other radio buttons not clickable after using Javascript function to select certain Radio based on if statement

html

javascript

forms

jquery

radio