采用jquery同django实现ajax通信

在网页访问中通过HTTP协议中的get/post文件发送数据或请求。在浏览器中输入url后，浏览器就会帮助我们完成请求的发送和返回，并刷新更新界面。但是，如果我们不想更新界面，仅仅是发送一个get/post文件数据（请求）传给服务器，然后获取服务器返回的response文件，这时就可以用ajax技术实现。

实现ajax的方法：1）采用原生的javascript发送，比较麻烦；2）使用jquery封装好了ajax方法

views.py视图函数，编写逻辑代码

 1 from django.shortcuts import render
 2 from django.http import HttpResponse
 3 import json
 4 # Create your views here.
 5 
 6 
 7 # def index(request):
 8 #     lists = ['a', 'b', 'c']
 9 #     dicts = {'a': 'apple', 'b': 'banana'}
10 #
11 #     return render(request, 'home.html', {
12 #         'lists': json.dumps(lists),
13 #         'dicts': json.dumps(dicts),
14 #     })
15 def index(request):
16     return render(request, 'home.html')
17 
18 
19 def add(request):
20     a = request.GET['a']
21     b = request.GET['b']
22     c = int(a)+int(b)
23     return HttpResponse(str(c))
24 
25 # def add(request):
26 #     a = request.GET['a']
27 #     b = request.GET['b']
28 #     c = int(a)+int(b)
29 #     return_json = {"result": c}
30 #     return HttpResponse(json.dumps(return_json), content_type='application/json')

home.html访问页面

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>Title</title>
 6 </head>
 7 <body>
 8     <form action="/add/" method="get">
 9 
10         a:<input type="text" name="a" id="a"><br>
11         b:<input type="text" name="b" id="b"><br>
12         <p>result:<span id="result"></span></p>
13         <button type="button" id="sum">Calc</button>
14     </form>
15 
16     <script src="http://apps.bdimg.com/libs/jquery/1.11.1/jquery.min.js"></script>
17     <script>
18         $(document).ready(function () {
19            $("#sum").click(function () {
20                var a = $('#a').val();
21                var b = $('#b').val();
22 
23                $.get("/add/", {'a':a, 'b':b}, function (ret) {
24                    $("#result").html(ret)
25                })
26            });
27         });
28     </script>
29 </body>
30 </html>

urls.py进行地址映射

 1 """my_query URL Configuration
 2 
 3 The `urlpatterns` list routes URLs to views. For more information please see:
 4     https://docs.djangoproject.com/en/dev/topics/http/urls/
 5 Examples:
 6 Function views
 7     1. Add an import:  from my_app import views
 8     2. Add a URL to urlpatterns:  path('', views.home, name='home')
 9 Class-based views
10     1. Add an import:  from other_app.views import Home
11     2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
12 Including another URLconf
13     1. Import the include() function: from django.urls import include, path
14     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
15 """
16 from django.contrib import admin
17 from django.urls import path
18 from blog import views
19 
20 urlpatterns = [
21     path('admin/', admin.site.urls),
22     path('index/', views.index),
23     path('add/', views.add),
24 ]

参考：http://blog.csdn.net/autoliuweijie/article/details/50291357