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Parsing JSON with JavaScript

I understand to get the value of a json data, for instance var json = [{"country":"US"}], I can do it like json[0].country.

I've this json data [{"0":"US"}], so how do I retrieve the data then?

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As a side note, properties in general an be accessed with array notation. Even with an object var myvar = { mykey: myvalue } you can do myvar[mykey]. You can event execute functions var myvar = { mykey: function(){...} } with myvar[mykey](). – Didier Ghys Dec 21 '11 at 9:34
@Didier G.: You mean myvar["mykey"]. – Edgar Bonet Dec 21 '11 at 11:53
@EdgarBonet. Indeed! Sorry for the typoh. – Didier Ghys Dec 21 '11 at 12:02
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closed as exact duplicate by casperOne♦ Dec 22 '11 at 14:40

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7 Answers

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You could use json[0]['0'] as the "0" is just a name as far as JavaScript is concerned

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Note that json[0][0] (notice lack of quotes) will also work. The bracket notation converts everything in the brackets to a string, so 0 will be turned to '0'. – Zirak Dec 21 '11 at 13:38
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up vote 1 down vote

If I'm understanding your question correctly, it would just be

json[0]["0"]

to retrieve your data. The zero is in quotes the second time round, because it's stored as a string in your example.

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up vote 1 down vote

Here the key of the only object into the array is string so you can access it with:

var bar = [{"0":"US"}];
console.log(bar[0]['0']); // 'US'
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up vote 1 down vote

you may acess the value with:

var json = [{"0":"US"}]
json[0]["0"]
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up vote 1 down vote

In this case you'll retrieve with

 json[0]["0"]
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up vote 1 down vote 
var foo = [{"0":"US"}];
console.log(foo[0]["0"]);
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up vote 1 down vote 
json[0]["0"]

Not really much more to add to that.

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