day 37 ajax跨域瀏覽器同源測略

最後更新：2017-07-15 來源：互聯網

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瀏覽器的同源策略

允許跨域：

script

img

iframe

不允許跨域：

ajax

跨域ajax

<!DOCTYPE html><html lang="en"><head>    <meta charset="UTF-8">    <title>Title</title></head><body>    <h1>T1</h1>    <input type="button" value="Ajax" onclick="AJAX();">    <input onclick="Jsonp();" type="button" value="Jsonp" >    <script type="text/javascript" src="/statics/jquery-3.1.1.js"></script>    <script>        function Jsonp() {            $.ajax({                url:‘http://127.0.0.1:8001/index‘,                dataType:‘jsonp‘,//                jsonp:‘callback‘,                jsonCallBack:‘func‘                            })        }        function ff(arg) {            console.log(arg)        }//        function Jsonp() {//           var tag=document.createElement(‘script‘);//            tag.src=‘http://127.0.0.1:8001/index‘;//            document.head.appendChild(tag);//            document.head.removeChild(tag);////        }        function AJAX() {            $.ajax({                url:‘/index‘,                type:‘post‘,                data:{‘k‘:‘1‘},                success:function (arg) {                    console.log(arg);                }            })        }    </script></body></html>

8002

#!/usr/bin/env python# -*- coding:utf-8 -*-import tornado.ioloopimport tornado.webimport ioclass IndexHandler(tornado.web.RequestHandler):    def get(self):        # callback=self.get_argument(‘callback‘)        # self.write(‘%s ([11,22,33]);‘ % callback)        self.render(‘index.html‘)    def post(self, *args, **kwargs):        self.write(‘t1t1t1t1t1posttttt‘)settings = {    ‘template_path‘: ‘views‘,    ‘static_path‘: ‘statics‘,    ‘static_url_prefix‘: ‘/statics/‘,}application = tornado.web.Application([    (r"/index", IndexHandler),], **settings)if __name__ == "__main__":    application.listen(8002)    tornado.ioloop.IOLoop.instance().start()

8002python

#!/usr/bin/env python# -*- coding:utf-8 -*-import tornado.ioloopimport tornado.webimport ioimport check_codeclass IndexHandler(tornado.web.RequestHandler):    def get(self):        self.write(‘ff([11,22,33,44])‘)    def post(self, *args, **kwargs):        self.write(‘ff([11,22,33,44])‘)settings = {    ‘template_path‘: ‘views‘,    ‘static_path‘: ‘statics‘,    ‘static_url_prefix‘: ‘/statics/‘,}application = tornado.web.Application([    (r"/index", IndexHandler),], **settings)if __name__ == "__main__":    application.listen(8001)    tornado.ioloop.IOLoop.instance().start()

8001python

day 37 ajax跨域瀏覽器同源測略

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