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>