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day 37 ajax跨域 浏览器同源测略

          

浏览器的同源策略

允许跨域:

script

img

iframe

不允许跨域:

ajax

 跨域ajax

技术分享
<!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://www.mamicode.com/‘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
技术分享
#!/usr/bin/env python
# -*- coding:utf-8 -*-

import tornado.ioloop
import tornado.web
import io


class 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
技术分享
#!/usr/bin/env python
# -*- coding:utf-8 -*-

import tornado.ioloop
import tornado.web
import io
import check_code

class 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 浏览器同源测略