AJAX 局部刷新实例:
使用 jQuery 实现基本的发送 AJAX 请求
index.html:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title> ajax 局部刷新实例 </title> </head> <body> <input type="text" id="i1">+ <input type="text" id="i2">= <input type="text" id="i3"> <input type="button" value="AJAX提交" id="b1"> <script src="/static/jquery-3.3.1.js"></script> <script> $("#b1").on("click", function () { $.ajax({ url:"/ajax_add/", type:"GET", data:{"i1":$("#i1").val(),"i2":$("#i2").val()}, success:function (data) { $("#i3").val(data); } }) }) </script> </body> </html>
urls.py:
from django.conf.urls import url from app01 import views urlpatterns = [ url(r'^index/', views.index), url(r'^ajax_add/', views.ajax_add), ]
views.py:
from django.shortcuts import render, HttpResponse def index(request): return render(request, "index.html") def ajax_add(request): num1 = request.GET.get("i1") num2 = request.GET.get("i2") ret = int(num1) + int(num2) return HttpResponse(ret)
访问,http://127.0.0.1:8000/index/
输入两组数,点击 “AJAX提交”,页面没有刷新也会计算出结果
上例 AJAX 代码解析:
<button id="b1">AJAX 测试</button> <script> $("#b1").click(function () { # 如果 id 为 b1 的按钮被点击 $.ajax({ url: "/ajax_add/", # ajax 数据请求的 URL type: "GET", # 请求的方式 data:{"i1":$("#i1").val(),"i2":$("#i2").val()}, # 要发送的数据 success: function (data) { # 如果请求被正常处理就执行该函数 $("#i3").val(data); # 把从后端返回的数据填到 i3 中 } }) }) </script>
Ajax 实现 url 跳转:
index.html:
<button id="b2">跳转</button> <script src="/static/jquery-3.3.1.js"></script> <script> $("#b2").on("click", function () { $.ajax({ url: "/ajax_test/", type: "GET", success: function (url) { location.href = url; # url 跳转 } }) }) </script>
views.py:
from django.shortcuts import render, HttpResponse def ajax_test(request): return HttpResponse("https://www.cnblogs.com/sch01ar/")
访问,http://127.0.0.1:8000/index/
点击“跳转”,就会跳转到博客园 https://www.cnblogs.com/sch01ar/
Ajax 显示图片:
index.html:
<button id="b3">显示图片</button> <script src="/static/jquery-3.3.1.js"></script> <script> $("#b3").on("click", function () { $.ajax({ url: "/ajax_test/", type: "GET", success: function (img_url) { var imgEle = document.createElement("img"); imgEle.src = img_url; $("#b3").after(imgEle); } }) }) </script>
views.py:
from django.shortcuts import render, HttpResponse def ajax_test(request): img_url = "https://www.cnblogs.com/sch01ar/0.jpg" return HttpResponse(img_url)
访问,http://127.0.0.1:8000/index/
点击 “显示图片”