如何從json對象輸出內容？

我有以下的JSON：如何從json對象輸出內容？

"responseData":{ 
     "results":[ 
     { 
      "GsearchResultClass":"GimageSearch", 
      "width":"600", 
      "height":"530", 
      "imageId":"ANd9GcRnCkl_5N-gAKDeyTvALVLqZJsTUP4M24qEL6MlBB3cOZo-yyAIAoNbJHkR", 
      "tbWidth":"135", 
      "tbHeight":"119", 
      "unescapedUrl":"http://www.harlemfur.com/images/Dog_Olive.jpg", 
      "url":"http://www.harlemfur.com/images/Dog_Olive.jpg", 
      "visibleUrl":"www.harlemfur.com", 
      "title":"\u003cb\u003eDogs\u003c/b\u003e Archives", 
      "titleNoFormatting":"Dogs Archives", 
      "originalContextUrl":"http://www.harlemfur.com/dogs/", 
      "content":"This note below is from a \u003cb\u003edog\u003c/b\u003e", 
      "contentNoFormatting":"This note below is from a dog", 
      "tbUrl":"http://t0.gstatic.com/images?q\u003dtbn:ANd9GcRnCkl_5N-gAKDeyTvALVLqZJsTUP4M24qEL6MlBB3cOZo-yyAIAoNbJHkR" 
     }, 
     { 
      "GsearchResultClass":"GimageSearch", 
      "width":"400", 
      "height":"366", 
      "imageId":"ANd9GcRde3tgTE21xhyW1CYlhQyrgvgd3ubj72GK7jl50GqXdC6QrGcVFXbD0w", 
      "tbWidth":"124", 
      "tbHeight":"113", 
      "unescapedUrl":"http://static.howstuffworks.com/gif/dog-best-friend-1.jpg", 
      "url":"http://static.howstuffworks.com/gif/dog-best-friend-1.jpg", 
      "visibleUrl":"animals.howstuffworks.com", 
      "title":"HowStuffWorks \u0026quot;Is a \u003cb\u003edog\u003c/b\u003e really a man\u0026#39;s best friend?\u0026quot;", 
      "titleNoFormatting":"HowStuffWorks \u0026quot;Is a dog really a man\u0026#39;s best friend?\u0026quot;", 
      "originalContextUrl":"http://animals.howstuffworks.com/pets/dog-best-friend.htm", 
      "content":"See more \u003cb\u003edog\u003c/b\u003e images.", 
      "contentNoFormatting":"See more dog images.", 
      "tbUrl":"http://t3.gstatic.com/images?q\u003dtbn:ANd9GcRde3tgTE21xhyW1CYlhQyrgvgd3ubj72GK7jl50GqXdC6QrGcVFXbD0w" 
     }, 
     { 
      "GsearchResultClass":"GimageSearch", 
      "width":"400", 
      "height":"358", 
      "imageId":"ANd9GcRq2Pn5YCq81h03V0Gv8mDrs00vFqQVFqdvMEFo3EIFuv7ILCq4wgoJwiA", 
      "tbWidth":"124", 
      "tbHeight":"111", 
      "unescapedUrl":"http://www.mydogneeds.com/dog-groups/herding-dogs/german-shepherd-dog.jpg", 
      "url":"http://www.mydogneeds.com/dog-groups/herding-dogs/german-shepherd-dog.jpg", 
      "visibleUrl":"www.mydogneeds.com", 
      "title":"German Shepherd, Herding \u003cb\u003eDog\u003c/b\u003e Breeds", 
      "titleNoFormatting":"German Shepherd, Herding Dog Breeds", 
      "originalContextUrl":"http://www.mydogneeds.com/dog-groups/dog-breed-german-shepherd-dog.html", 
      "content":"Herding \u003cb\u003eDog\u003c/b\u003e Breeds - German", 
      "contentNoFormatting":"Herding Dog Breeds - German", 
      "tbUrl":"http://t1.gstatic.com/images?q\u003dtbn:ANd9GcRq2Pn5YCq81h03V0Gv8mDrs00vFqQVFqdvMEFo3EIFuv7ILCq4wgoJwiA" 
     }, 
     { 
      "GsearchResultClass":"GimageSearch", 
      "width":"350", 
      "height":"349", 
      "imageId":"ANd9GcTUELr8ovAZ0E_4Gt9zYz3fsc5YG2VL7KOoWbx_hhzwnaLjcGPS0da_hVQ", 
      "tbWidth":"120", 
      "tbHeight":"120", 
      "unescapedUrl":"http://www.costumedogs.com/wp-content/uploads/2007/07/tux.jpg", 
      "url":"http://www.costumedogs.com/wp-content/uploads/2007/07/tux.jpg", 
      "visibleUrl":"www.costumedogs.com", 
      "title":"Poker Games Online", 
      "titleNoFormatting":"Poker Games Online", 
      "originalContextUrl":"http://www.costumedogs.com/", 
      "content":"\u003cb\u003eDog\u003c/b\u003e", 
      "contentNoFormatting":"Dog", 
      "tbUrl":"http://t2.gstatic.com/images?q\u003dtbn:ANd9GcTUELr8ovAZ0E_4Gt9zYz3fsc5YG2VL7KOoWbx_hhzwnaLjcGPS0da_hVQ" 
     } 
     ], 
     "cursor":{ 
     "pages":[ 
      { 
       "start":"0", 
       "label":1 
      }, 
      { 
       "start":"4", 
       "label":2 
      }, 
      { 
       "start":"8", 
       "label":3 
      }, 
      { 
       "start":"12", 
       "label":4 
      }, 
      { 
       "start":"16", 
       "label":5 
      }, 
      { 
       "start":"20", 
       "label":6 
      }, 
      { 
       "start":"24", 
       "label":7 
      }, 
      { 
       "start":"28", 
       "label":8 
      } 
     ], 
     "estimatedResultCount":"158000000", 
     "currentPageIndex":0, 
     "moreResultsUrl":"http://www.google.com/images?oe\u003dutf8\u0026ie\u003dutf8\u0026source\u003duds\u0026start\u003d0\u0026hl\u003den\u0026q\u003ddog" 
     } 
    }, 
    "responseDetails":null, 
    "responseStatus":200

我怎麼能循環通過它來獲取所有4個結果的對象url？

只是試圖瞭解如何提取json的數據。

來源

2011-09-04 Noodles

檢查此鏈接..它說，所有關於JS解析JSON：

http://www.json.org/js.html

代碼：

<script language="javascript"> 
var k= {"responseData":{ 


    /*** rest of code ****/ 


    }, 
    "responseDetails":null, 
    "responseStatus":200}; 



     for (i = 0; i < k.responseData.results.length; i++) 
     { 
     alert(k.responseData.results[i].url); 
     } 


</script>

來源

2011-09-04 05:24:54 mithunsatheesh

'for ... in'將返回比它應該返回更多，如果有人一直在搞對象原型。在可能的情況下避免使用...。 – cdhowie

@cdhowie：謝謝你的幫助..我糾正了代碼.. :) – mithunsatheesh

就像使用其他任何JavaScript對象一樣。

var results = responseData.results; 
var i; 
for (i = 0; i < results.length; i++) { 
    // Do something with results[i].url 
}

來源

2011-09-04 05:19:32 cdhowie

只記得緩存'results'的長度。像這樣：'for（var i = 0，len = results.length; i

這看起來像是一個微型優化。只要「結果」的長度不變，這兩個例子在功能上是相同的，並且在性能方面應該沒有太大差別。 – cdhowie

如何從json對象輸出內容？

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