我正在尝试根据用户选择显示输入字段。从stackoverflow中学习，我编写了以下代码：
<form action="/register/" method="post" enctype="multipart/form-data">{% csrf_token %}
<select name="designation" id="designation">
<option value="faculty">Faculty</option>
<option value="student">Student</option>
</select>
<div id="students" style="display:none;">
<input type="file" name="uploadFile">
</div>
</form>
<script type="text/javascript">
$('#designation').on('change',function(){
if( $(this).val()==="student"){
$("#students").show()
}
else{
$("#students").hide()
}
});
</script>
该代码确实适用于 https://jsfiddle.net/。但是，当我尝试在我的 django 模板中使用它时，它不起作用。(即，在选择"学生"时，不会显示任何内容(。我的基地中还包括以下内容.html。
<script src="{% static 'jquery-3.2.1.min.js' %}"></script>
<script src="{% static 'js/bootstrap.min.js' %}" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
更新：基地.html：hideshow.js是脚本。
<!DOCTYPE html>
{% load staticfiles %}
{% load static %}
<html lang="en"
xmlns="http://www.w3.org/1999/html">
<head>
<meta charset="UTF-8">
<link href="{% static 'css/bootstrap-dist.min.css' %}" rel="stylesheet">
<link href="{% static 'css/ie10-viewport-bug-workaround.css' %}" rel="stylesheet">
<script src="{% static 'JS/html5shiv.min.js' %}"></script>
<script src="{% static 'JS/respond.min.js' %}"></script>
<script src="{% static 'JS/hideshow.js' %}"></script>
<link href="{% static 'css/carousel.css' %}" rel="stylesheet">
<link rel="stylesheet" href="{% static 'css/bootstrap.min.css' %}" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<link rel="stylesheet" href="{% static 'css/bootstrap-theme.min.css' %}" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">
<link rel="stylesheet" type="text/css" href="{% static 'css/sampleLogin.css' %}" />
</head>
<body>
{% include "messages_display.html" %}
<br />
{% include "navbar.html" %}
{% block content %}
{% endblock %}
注册.html：
{% extends "base.html" %}
{% load crispy_forms_tags %}
{% block content %}
<div class="container">
<div class="col-md-12">
<div class="col-sm-7 col-sm-offset-2">
<h1>{{ title }}</h1><br />
<form action="/register/" method="post" enctype="multipart/form-data">{% csrf_token %}
<select name="designation" id="designation">
<option value="faculty">Faculty</option>
<option value="student">Student</option>
</select>
<div id="students" style="display:none;">
<input type="file" name="uploadFile">
</div>
</form>
{% endblock content %}
请帮忙。
首先，你必须在html文件中包含jquery.min.js文件。然后你必须将js代码保存在$(document(.ready(function((.那么你的代码就可以工作
了<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$('#designation').on('change',function(){
console.log($(this).val());
if( $(this).val()==="student"){
$("#students").show()
}
else{
$("#students").hide()
}
});
});
</script>
<select name="designation" id="designation">
<option value="faculty">Faculty</option>
<option value="student">Student</option>
</select>
<div id="students" style="display:none;">
<input type="file" name="uploadFile">
</div>