ajax post方式提交时需要在 data中添加 "csrfmiddlewaretoken":$("[name=csrfmiddlewaretoken]").val()
user/url.py
urlpatterns = [
url(r"^check_username/$",views.check_username,name="check_username"),
url(r"^check_password/$",views.check_password,name="check_password"),
url(r"^check_password2/$",views.check_password2,name="check_password2"),
url(r"^check_img_code/$",views.check_img_code,name="check_img_code"),
...]
user/register.html
{% load static from staticfiles %}
<script src="{% static "book/js/jquery-1.12.4.min.js" %}"></script>
<form action="{% url "user:register" %}" method="POST" id="register_form">
{% csrf_token %}
<table>
<tr>
<td>用户名:</td>
<td><input type="text" id="username" name="username" placeholder="用户名位6-10位"></td>
<td id="username_link"></td>
</tr>
<tr>
<td>密码:</td>
<td><input type="password" id="password" name="password" placeholder="密码位6-10位"></td>
<td id="password_link"></td>
</tr>
<tr>
<td>确认密码:</td>
<td><input type="password" id="password2" name="password2" placeholder="密码位6-10位"></td>
<td id="password2_link"></td>
</tr>
<tr>
<td> 验证码:</td>
<td><input type="text" id="img_code" name="img_code" placeholder="请输入验证码"></td>
<td> <img src="{% url "user:create_img_code" %}" id="create_img_code"/></td>
<td id="code_link"></td>
</tr>
<tr>
<td><input type="submit" value="注册"></td>
</tr>
</table>
</form>
<script>
var create_img_code = document.getElementById("create_img_code")
var url = "/user/create_img_code?num="
create_img_code.onclick = function () {
var num = new Date().getTime()
url += num
create_img_code.src = url
}
$(function(){
$("#username").blur(function(){
$.ajax({
"url":"{% url "user:check_username" %}",
"data":{
"username":$(this).val().trim()
},
"success":function (data) {
$("#username_link").html("")
$("#username_link").append(data.r_link)
}
})
})
$("#password").blur(function(){
$.ajax({
"url":"{% url "user:check_password" %}",
"type":"post",
"data":{
"password":$(this).val().trim(),
"csrfmiddlewaretoken":$("[name=csrfmiddlewaretoken]").val()
},
"success":function (data) {
$("#password_link").html("")
$("#password_link").append(data.r_link)
}
})
})
$("#password2").blur(function(){
$.ajax({
"url":"{% url "user:check_password2" %}",
"type":"post",
"data":{
"password":$("#password").val().trim(),
"password2":$(this).val().trim(),
"csrfmiddlewaretoken":$("[name=csrfmiddlewaretoken]").val()
},
"success":function (data) {
$("#password2_link").html("")
$("#password2_link").append(data.r_link)
}
})
})
})
</script>
user/views.py
def check_username(request):
username = request.GET.get("username")
print(username)
for i in User.objects.all():
if i.username == username:
r={"r_link":"该用户名已被使用"}
return HttpResponse(json.dumps(r, ensure_ascii=False),
content_type="application/json;charset=utf-8")
else:
if len(username)>=6 and len(username)<=10:
r = {"r_link": "ok"}
return HttpResponse(json.dumps(r, ensure_ascii=False),
content_type="application/json;charset=utf-8")
else:
r = {"r_link": "用户名为6-10位"}
return HttpResponse(json.dumps(r, ensure_ascii=False),
content_type="application/json;charset=utf-8")
def check_password(request):
password = request.POST.get("password")
if len(password)>=6 and len(password)<=10:
r = {"r_link": "ok"}
else:
r = {"r_link": "密码为6-10位"}
return HttpResponse(json.dumps(r, ensure_ascii=False),
content_type="application/json;charset=utf-8")
def check_password2(request):
password = request.POST.get("password")
password2 = request.POST.get("password2")
print(password,password2)
if password==password2:
r = {"r_link": "ok"}
else:
r = {"r_link": "两次密码不一致"}
return HttpResponse(json.dumps(r, ensure_ascii=False),
content_type="application/json;charset=utf-8")
def check_img_code(request):
img_code1 = request.GET.get("img_code")
img_code2= request.session.get("img_code")
print(img_code1,img_code2)
if img_code1==img_code2:
r = {"r_link": "ok"}
else:
r = {"r_link": "验证码错误"}
return HttpResponse(json.dumps(r, ensure_ascii=False),
content_type="application/json;charset=utf-8") 
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