聚合物核 - ajax交叉域问题 [英] Polymer core-ajax cross domain issue

问题描述

我想使用Polymer和 core-ajax 组件。我一直回到在请求的资源上没有Access-Control-Allow-Origin头。组件的代码位于

下面

 < core-ajax id =ajax
 auto 
 url =http://api.meetup.com/2/event_comments/?key=MyKey&event_id=191593992&callback=？ 
 on-core-response ={{commentsLoaded}}
 method ='GET'
 contentType ='text / javascript'
 handleAs =json> 
< / core-ajax> 
  

如果我使用jQuery和以下代码片段，它工作

  $ .getJSON（'http://api.meetup.com/2/event_comments/?key=MyKeyc&event_id=191593992&callback=？'）$ b $所以我想我的问题是什么巫术魔法是jQuery使用聚合物不是，我怎么解决它？我已经检查控制台，一切看起来是一样的（头，参数等）。
解决方案
正如恰当的名字Jason P指出您可以在这里使用polymer-jsonp。
 < polymer-jsonp 
 auto 
 url =http://api.meetup.com/2/event_comments/?key=MyKeyc&event_id=191593992&callback=
 on-polymer-response ={{commentsLoaded}}> 
< / polymer-jsonp> 
  
 
I am trying to do a cross domain call using Polymer and the core-ajax component. I keep getting back  No 'Access-Control-Allow-Origin' header is present on the requested resource. My code for the component is below
    <core-ajax id="ajax"
        auto
        url="http://api.meetup.com/2/event_comments/?key=MyKey&event_id=191593992&callback=?"
        on-core-response="{{commentsLoaded}}"
        method='GET'
        contentType='text/javascript'
        handleAs="json">
    </core-ajax>
If I use jQuery and the following snippet, it works
$.getJSON('http://api.meetup.com/2/event_comments/?key=MyKeyc&event_id=191593992&callback=?')
So I guess my question is what voodoo magic is jQuery using that Polymer is not and how do I get around it? I have checked the console and everything looks identical (headers, params etc).
解决方案
As the aptly named Jason P points out in the comments above, you can use polymer-jsonp here.
<polymer-jsonp 
    auto 
    url="http://api.meetup.com/2/event_comments/?key=MyKeyc&event_id=191593992&callback=" 
    on-polymer-response="{{commentsLoaded}}">
</polymer-jsonp>


                        
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