Javascript 如何解决属性错误：'；非类型'；对象没有属性'；编码'；在Django
我尝试使用JAVASCRIPT对HTML文件中的给定表单进行验证，并使用AJAX检查数据库表中的电子邮件是否可用。还从hashlib导入了sha256。但我遇到了类似这样的错误。我不明白为什么会发生这种错误。有人能为这个问题提出解决方案吗Javascript 如何解决属性错误：'；非类型'；对象没有属性'；编码'；在Django,javascript,python,django,ajax,sha256,Javascript,Python,Django,Ajax,Sha256,我尝试使用JAVASCRIPT对HTML文件中的给定表单进行验证，并使用AJAX检查数据库表中的电子邮件是否可用。还从hashlib导入了sha256。但我遇到了类似这样的错误。我不明白为什么会发生这种错误。有人能为这个问题提出解决方案吗 Internal Server Error: /User/Registration/ Traceback (most recent call last): File "C:\PYTHON\lib\site-packages\django\core
Internal Server Error: /User/Registration/
Traceback (most recent call last):
File "C:\PYTHON\lib\site-packages\django\core\handlers\exception.py", line 47, in inner
response = get_response(request)
File "C:\PYTHON\lib\site-packages\django\core\handlers\base.py", line 179, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "D:\Project\salon\user\views.py", line 214, in userregister
epassword = sha256(upassword.encode()).hexdigest()
AttributeError: 'NoneType' object has no attribute 'encode'
<!DOCTYPE html>
<html lang="en">
{% load static %}
<head>
<meta charset="UTF-8">
<title>User Registration</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<link href="{% static 'styles/style.css' %}" rel="stylesheet"/>
<script type="text/javascript" language="javascript">
function getsid(str)
{ print(str)
if(window.XMLHttpRequest)
{
xmlhttp= new XMLHttpRequest();
}
xmlhttp.onreadystatechange=function()
{
if(xmlhttp.readystate==4 && xmlhttp.status==200)
{
document.getElementById("lemail").innerHTML= xmlhttp.responseText;
}
}
xmlhttp.open("GET","{% url 'checkemail' %}?id="+str,true);
xmlhttp.send(null);
}
</script>
</head>
<body>
<section class="sreg" id="sreg">
<div class="container-fluid">
<div class="htop">
<h4>User <span>Register Form</span></h4>
</div>
<div class="row">
<div class="col-12">
<form method="POST" name="contact" action="{% url 'userregister' %}">
{%csrf_token%}
<div class="form-row">
<div class="form-group col-md-6">
<label for="fname">First Name</label>
<input type="text" class="form-control" id="fname" name="fname" placeholder="First Name">
<span id="lfname"></span>
</div>
<div class="form-group col-md-6">
<label for="lname">Last Name</label>
<input type="text" class="form-control" id="lname" name="lname" placeholder="Last Name">
<span id="llname"></span>
</div>
</div>
<div class="form-group">
<label for="email">Email</label>
<input type="email" class="form-control" id="email" name="email" placeholder="Email" onchange="getsid(this.value)">
<span id="lemail"></span>
</div>
<div class="form-group">
<label for="password">Password</label>
<input type="password" class="form-control" id="password" name="pass" placeholder="Password">
<span id="lpass"></span>
</div>
<div class="form-group">
<label for="cpassword">Confirm Password</label>
<input type="password" class="form-control" id="cpassword" name="cpass" placeholder="Confirm Password">
<span id="lcpass"></span>
</div>
<div class="form-group">
<label for="mobile">Mobile</label>
<input type="text" class="form-control" id="mobile" name="mobile" placeholder="Mobile">
<span id="lmob"></span>
</div>
<div class="form-group">
<label for="address">Address</label>
<textarea class="form-control" id="address" name="address" rows="3" placeholder="Address"></textarea>
<span id="laddress"></span>
</div>
<center>
<button type="submit" class="btn btn-success" onclick="return userregister()">Submit</button>
</center>
</form>
</div>
</div>
</div>
</section>
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<script src="{% static 'js/scriptfunction.js' %}"></script>
</body>
</html>
from django.urls import path,re_path
from . import views
urlpatterns=[
path('User/Registration/', views.userregister, name="userregister"),
path('User/Registration/CheckEmail', views.checkemail, name="checkemail"),
]
upassword upassword = request.POST.get('password')
try:
upassword = request.POST['password']
except KeyError:
// password value not passed in POST request
// return HTTPResponse with 400 code
当我运行此代码时，post数据没有密码。如何在post请求中传递密码@navyad当我使用'required'进行验证而不是使用onclick函数时，它可以工作。
try:
upassword = request.POST['password']
except KeyError:
// password value not passed in POST request
// return HTTPResponse with 400 code