CODEWITHSUNDEEP
javascriptjson
OussamaLord
OussamaLord

Reputation: 1095

Read complex JSON in pure Javascript

I have the following json object and I would like to read it (access some data from it)

how can I do it in Javascript please ?

var allSites = 
  {"oldSites":
        [ 
            {
                "site0" : "http://site0.com/", 
                "site1" : "http://site1.com/",
                "site2" : "http://site2.com/" 
            }
        ],
    "newSites":
        [
            {
                "site0" : "http://site0/new", 
                "site1" : "http://site1/new", 
                "site2" : "http://site2/new"
            }
        ]
  };

This is what I did but I get undefined.

var allSites = eval(allSites);
alert(allSites.oldSites.site0);

Thanks.

Upvotes: 0

Views: 64

Answers (3)

Ani
Ani

Reputation: 1655

Please remove the square brackets which make oldSites an array

var allSites = 
  {"oldSites":

            {
                "site0" : "http://site0.com/", 
                "site1" : "http://site1.com/",
                "site2" : "http://site2.com/" 
            }
        ,
    "newSites":

            {
                "site0" : "http://site0/new", 
                "site1" : "http://site1/new", 
                "site2" : "http://site2/new"
            }

  };

Upvotes: 1

Guillaume Poussel
Guillaume Poussel

Reputation: 9822

If your object is defined like you have described, it is not JSON, you do not need to use eval.

Then, since oldSites is an array, you have to index it, like oldSites[0] to get the first value.

Then, get the site0 key of the object retrieved.

So you should use: allSites.oldSites[0].site0

Upvotes: 3

Satpal
Satpal

Reputation: 133453

Use

allSites.oldSites[0].site0

allSites.oldSites is an array. So you have to iterate using index

Upvotes: 2

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