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Problem Accessing JSON Data on This Example

 2 years ago
source link: https://www.codesd.com/item/problem-accessing-json-data-on-this-example.html
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Problem Accessing JSON Data on This Example

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this is a json i have, is valid, but for some reason if I access this query.pages.length is "undefined"... how do i know the numebr of children of pages then? are they children?

  {
       "query-continue":{
          "allpages":{
             "gapfrom":"Tron (film)"
          }
       },
       "query":{
          "pages":{
             "174059":{
                "pageid":174059,
                "ns":0,
                "title":"Tron"
             },
             "29799461":{
                "pageid":29799461,
                "ns":0,
                "title":"Tron: Betrayal"
             },
             "2424602":{
                "pageid":2424602,
                "ns":0,
                "title":"Tron: Deadly Discs"
             },
             "25415189":{
                "pageid":25415189,
                "ns":0,
                "title":"Tron: Evolution"
             },
             "29958517":{
                "pageid":29958517,
                "ns":0,
                "title":"Tron: Evolution - Battle Grids"
             },
             "22547607":{
                "pageid":22547607,
                "ns":0,
                "title":"Tron: Legacy"
             },
             "29541046":{
                "pageid":29541046,
                "ns":0,
                "title":"Tron: Legacy (soundtrack)"
             },
             "11825742":{
                "pageid":11825742,
                "ns":0,
                "title":"Tron: Solar Sailer"
             },
             "8005401":{
                "pageid":8005401,
                "ns":0,
                "title":"Tron: The Ghost in the Machine"
             },
             "29487895":{
                "pageid":29487895,
                "ns":0,
                "title":"Tron: Uprising"
             }
          }
       }
    }

I wrote this code to count length of pages:

count = 0;
for (var key in netData.query.pages) {
count = count + 1;
}
alert(count);

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