javascript 使用表单选择菜单在 HTML 中显示条件字段

Displaying conditional Fields in HTML Using A Form Select Menu

提问by Derek O Brien

I am trying to get my page to display different form elements depending on which option is selected from the select menu but i can not get it to work for me

我试图让我的页面显示不同的表单元素，具体取决于从选择菜单中选择的选项，但我无法让它对我来说有效

my HTML is

我的 HTML 是

 <h3>Register For General Admission</h3>

<form action="GeneralRegister" method="POST" style="text-align:center">
Type Of Ticket: <select name="typeofticket" size="1" id="generalAdmissionList">
    <option value="1"></option>
    <option value="1">General Admission</option>
    <option value="1">General Admission School</option>
</select>
<br>
<div id="1">
    <!--for general admission-->
    First name:
    <input type="text" name="firstname">
    <br>Last name:
    <input type="text" name="lastname">
    <br>
</div>
<div id="2">
    <!--For Schools-->
    School name:
    <input type="text" name="school">
    <br>
</div>
Email:
<input type="text" name="email">
<br>
<input type="submit" value="Submit">
<br>
</form>

and my JavaScript is

我的 JavaScript 是

$("#generalAdmissionList").change(function () {
var selected = $("#generalAdmissionList option:selected").form();
$('div').hide();
$('#' + selected).show();
});

$(document).ready(function (e) {
$('div').hide();
});

any help would be great

任何帮助都会很棒

采纳答案by attila

Change your select options to this

将您的选择选项更改为此

<option value="1">General Admission</option>
<option value="2">General Admission School</option>

and the javascript line to get the selected value should be like this

并且获取选定值的 javascript 行应该是这样的

var selected = $("#generalAdmissionList option:selected").val();