http.js ``` class HTTP{ request({url,type = "get",dataType}) { return $.ajax({ url, type, dataType }) } } ``` index.html ``` <script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.js"></script> <script src="http.js"></script> ``` ``` <script> var http = new HTTP(); http.request({ url:"https://api.douban.com/v2/movie/top250", dataType:"jsonp" }).then(res=>{ console.log(res) }) </script> ```