html原生从json获取数据,使用javascript / html从JSON结果中获取一个数据

在我开始之前,我是初学者,我希望在提出问题时我不会滥用条款.

我开始编写一个使用英特尔XDK的HTML5 / Javascript应用程序从在线api查询视频游戏的条形码,我只需要一个JSON结果(游戏的标题)然后继续在我的内部使用应用程序.

JSON结果如下所示：

{"0":{"productname":"The Elder Scrolls V: Skyrim","imageurl":"http://ecx.images-amazon.com/images/I/413Gdr3FzqL._SL160_.jpg","producturl":"","price":"14.00","currency":"USD","saleprice":"","storename":"N/A"},"1":{"productname":"Skyrim X360","imageurl":"http://ecx.images-amazon.com/images/I/41QbF1Vg5KL._SL160_.jpg","producturl":"","price":"18.00","currency":"USD","saleprice":"","storename":"N/A"},"2":{"productname":"Bethesda Softworks Skyrim X360","imageurl":"http://ecx.images-amazon.com/images/I/41X97hqaJwL._SL160_.jpg","producturl":"","price":"23.95","currency":"USD","saleprice":"","storename":"N/A"},"3":{"productname":"BETHESDA SOFTWORKS 11763 / Skyrim X360","imageurl":"http://ecx.images-amazon.com/images/I/41IaEzP-6pL._SL160_.jpg","producturl":"","price":"34.00","currency":"USD","saleprice":"","storename":"N/A"}}

我想在我的应用程序中使用的只是第一个’productname’条目.

JSON来自api提供者,我有一个帐户,所以它在远程URL上,例如我们称之为URL：http://JsonIs.here

我希望能够查询JSON URL并返回“The Elder Scrolls V：Skyrim”作为字符串,然后我可以继续在应用程序的其他地方使用.

我的条形码扫描工作正常,我可以创建GET请求URL,我只是不知道从哪里开始调用该URL然后返回我需要的一小段信息.