1. JS实现Ajax
<!doctype html><html lang="en"><head> ??<meta charset="UTF-8"> ??<meta name="viewport" ????????content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> ??<meta http-equiv="X-UA-Compatible" content="ie=edge"> ??<title>Document</title></head><body> ??<button type="submit" id="js_ajax_test">Ajax测试</button> ??<script> ??????var js_ajax_test = document.getElementById("js_ajax_test"); ??????js_ajax_test = function () { ??????????var xmlHttp = new XMLHttpRequest(); ??????????xmlHttp.open("POST", "/js_ajax_test/", true); ??????????xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); ??????????xmlHttp.send("username=yang&password=123"); ??????????xmlHttp.onreadystatechange = function () { ??????????????if (xmlHttp.readyState === 4 && xmlHttp.status ===200){ ??????????????????alert(xmlHttp.responseText) ??????????????} ??????????} ??????} ??</script></body></html>2. jQuery实现的Ajax
最基本的jQuery发送Ajax请求示例：
<!doctype html><html lang=""><head> ??<meta charset="UTF-8"> ??<meta name="viewport" ????????content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> ??<meta http-equiv="X-UA-Compatible" content="ie=edge"> ??<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.js"></script> ??<title>ajax test</title></head><body> ??<button id="ajaxTest">AJAX测试</button> ??<script> ??????$("#ajaxTest").click(function () { ??????????$.ajax({ ??????????????url: "/ajaxTest/", ??????????????type: "POST", ??????????????data: {username: "yang", password:123}, ??????????????success: function (data) { ??????????????????alert(data) ??????????????} ??????????}) ??????}) ??</script></body></html>views.py
def ajax_test(request): ??return render(request, "ajax_test.html")def ajaxTest(request): ??username = request.POST.get("username") ??password = request.POST.get("password") ??return HttpResponse("用户名：{} 密码：{}".format(username, password))urls.py
from django.conf.urls import urlfrom django.contrib import adminfrom app01 import viewsurlpatterns = [ ??url(r‘^admin/‘, admin.site.urls), ??url(r‘^ajax_test/‘, views.ajax_test), ??url(r‘^ajaxTest/‘, views.ajaxTest)]
3. Ajax中使用JSON
data参数中的键值对，如果值不为字符串，需要将其转换成字符串类型。
如果没有转换为字符串，那么views中的代码就接收不到password的值。
<script> ??????$("#ajaxTest").click(function () { ??????????$.ajax({ ??????????????url: "/ajaxTest/", ??????????????type: "POST", ??????????????data: {username: "yang", password:JSON.stringify([1, 2, 3])}, ??????????????success: function (data) { ??????????????????alert(data) ??????????????} ??????????}) ??????})</script>js和jQuery实现的Ajax
原文地址：https://www.cnblogs.com/yang-wei/p/10009053.html