dojo/request/script通过JSONP实现跨域请求数据，需要后台配合返回Javascript代码：
require(["dojo/request/script","dojo/json"],function(script,JSON) {
script.get(url,{
handleAs: "json",jsonp: 'jsonpcallback'
}).then(function(data) {
console.log(JSON.stringify(data));
});
});
请求url的形式：
http://url?param=bgh&jsonpcallback=dojo_request_script_callbacks.dojo_request_script0
响应头信息包含此内容：
Content-Type: application/javascript;charset=UTF-8响应内容：
dojo_request_script_callbacks.dojo_request_script0({"name":"bgh","note":"","success":true});