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我无法解析以下链接。我希望能够使用 $.getJSON() 从数组中的每个对象中提取一些对象特征。有谁知道我该怎么做？

谢谢！

http://search.yahooapis.com/NewsSearchService/V1/newsSearch?appid=YahooDemo&query=market&results=2&language=en&output=json&callback= ?

这是实际的对象：

{
  "ResultSet": {
    "totalResultsAvailable": "68369",
    "totalResultsReturned": 2,
    "firstResultPosition": "1",
    "Result": [{
      "Title": "MARKET SNAPSHOT: U.S. Stocks To Begin New Week In Vulnerable Spot",
      "Summary": "MARKET SNAPSHOT: U.S. Stocks To Begin New Week In Vulnerable Spot",
      "Url": "http:\/\/www.foxbusiness.com\/story\/markets\/industries\/market-snapshot-stocks-begin-new-week-vulnerable-spot\/",
      "ClickUrl": "http:\/\/www.foxbusiness.com\/story\/markets\/industries\/market-snapshot-stocks-begin-new-week-vulnerable-spot\/",
      "NewsSource": "FOX Business",
      "NewsSourceUrl": "http:\/\/www.foxbusiness.com\/",
      "Language": "en",
      "PublishDate": "1278143248",
      "ModificationDate": "1278144826"
    }, {
      "Title": "MARKET SNAPSHOT: U.S. Stocks In The Red, Post Weekly Losses",
      "Summary": "MARKET SNAPSHOT: U.S. Stocks In The Red, Post Weekly Losses",
      "Url": "http:\/\/feeds.foxbusiness.com\/~r\/foxbusiness\/latest\/~3\/hL3f6RiYhdU\/",
      "ClickUrl": "http:\/\/feeds.foxbusiness.com\/~r\/foxbusiness\/latest\/~3\/hL3f6RiYhdU\/",
      "NewsSource": "Fox News",
      "NewsSourceUrl": "http:\/\/www.foxnews.com\/",
      "Language": "en",
      "PublishDate": "1278109361",
      "ModificationDate": "1278109412"
    }]
  }
}
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2 回答 2

1

以下应该工作。您将需要从数据中提取所需的属性

$.getJSON('http://search.yahooapis.com/NewsSearchService/V1/newsSearch?appid=YahooDemo&query=market&results=2&language=en&output=json&callback=', function(data) {
  alert(data.ResultSet.totalResultsAvailable);
});

更新

输出有意义的结果，成功函数触发需要回调。

于 2010-07-04T01:53:57.423 回答
1

我不确定我是否完全理解它，但如果你仔细阅读，你会发现它是在对象表示法上（毕竟这就是 JSON 的意思），所以你可以访问任何具有限定名称的属性（data.ResultSet.Result [0].Summary 将访问第一个结果的摘要，例如示例）。

无论如何，您想提取哪些特征？您想将它们打印到某个 DOM 组件、提醒它们还是将它们存储在变量中？不管是什么情况，检查这段代码：对于每个结果，它会在一个警告对话框中打印它的标题和 url，（它使用 jQuery 的 each 函数来迭代结果）：

$.getJSON('http://search.yahooapis.com/NewsSearchService/V1/newsSearch?appid=YahooDemo&query=market&results=2&language=en&output=json&callback=',
function(data){
   $.each(data.ResultSet.Result, function(index, value){
     alert("Result #"+index+": "+value.Title+" url: "+value.Url);
   });
   return false;
});

我会留下回调，因为它可能是一个跨站点调用，并且该参数用于规避大多数主要浏览器强制执行的相同来源策略。

于 2010-07-04T02:22:19.787 回答