Promise是一个非常重要的方法，它可以是一些异步操作最后归为有序的进行。
url:
from django.contrib import admin from django.urls import path from app01 import views urlpatterns = [ path('admin/', admin.site.urls), path("index/",views.index), path("index2/",views.index2) ]
views:
from django.shortcuts import render,HttpResponse,redirect from django.http import JsonResponse # Create your views here. def index(request): if request.method == "POST": return redirect("/index2/") return render(request,"index.html") def index2(request): res = {"code":1} return JsonResponse(res)
index:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <button id="b1">点击</button> </body> <script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.js"></script> <script> function sendmsg(path){ return new Promise(function(resolve,reject){ $.ajax({ url:path, type:"get", success:function(data){ {#console.log(111)#} console.log(data) resolve(data) }, error:function(err){ reject(err) } }) }) }; $("#b1").click(function(){ var ret = sendmsg("/index2/"); ret.then(function (data) { alert(data) }).catch(function (err) { alert(err) }) }) </script> </html>