~~~ var b = $.ajax({ url: "http://api.douban.com/v2/movie/in_theaters", dataType: "jsonp" }) var a = $.ajax({ url: "http://api.douban.com/v2/movie/top250", dataType: "jsonp" }) Promise.all([a,b]).then(res => { var [a,b]=res; console.log(a); console.log(b); }, err => { }) //$.ajax本身就是一个promise对象 ~~~