Comments on: Java script: access properties of a complex JSON object

By: Felix Grund

Felix Grund — Thu, 08 Dec 2011 10:18:00 +0000

Hey Gabriel,

I was just searching for a solution for this problem. Yours works fine, but only if I put a backslash before w+ in the regular expression:
var token = /w+/g;Did you forget that our is it something I just can’t see at the moment?Cheer,Felix

By: tommaso

tommaso — Wed, 17 Jun 2009 13:48:28 +0000

hi guys, I really need your help.

here is the problem: I have a software project in the repository but I don’t want that some people access to one or more folders/files. If I set the security on those file everithing is ok. the problem is that, when I create a Branch I have to set again the security rule to access those critical folders/files. how can I do to ensure that access rules are inherited in the branch?

please help me!!

thank you very much!!

Tommaso

By: Terry Walker

Terry Walker — Wed, 25 Mar 2009 09:41:28 +0000

Wow, I never knew thataccess properties of a complex JSON object. That’s pretty interesting…

By: Michael Hart

Michael Hart — Tue, 10 Mar 2009 23:07:39 +0000

Hmmm, interesting – maybe that’s why yours didn’t work either… there’s a hidden “i” in square brackets in there…

Will try again:

temp = temp[ results[ i ] ];

By: Michael Hart

Michael Hart — Tue, 10 Mar 2009 22:43:42 +0000

Ah righto – sorry, my bad, I didn’t quite get that from the example.

Can you give more context about where this expression is coming from? ie, why is it already in the format “Name.FirstName”? If it’s for an XPath type situation, then I think JSONPath already covers this (http://goessner.net/articles/JsonPath/).

Also, I think there’s possibly a typo in the loop – I think it should be:

temp = temp[results[i]];

By: Gabriel N. Schenker

Gabriel N. Schenker — Tue, 10 Mar 2009 21:42:05 +0000

@all: it is indeed important to note that I needed to dynamically resolve properties. So no direct access…

By: Colin Ramsay

Colin Ramsay — Tue, 10 Mar 2009 14:42:16 +0000

I see, sorry Gabriel, I misunderstood your requirements.

By: Sergio Pereira

Sergio Pereira — Tue, 10 Mar 2009 14:00:49 +0000

@Michael, Gabriel’s post mentions that he needs to do this dynamically, so the dot notation like that doesn’t help.
@Keeto gave the suggestion I was about to give – square brackets notation.
@Jeremy, eval isn’t something that you’s want to use all the time, especially if you don’t control the source of those strings. There’s generally a good way to avoid uses of eval with cleaner JavaScript.

By: Jeremy Wiebe

Jeremy Wiebe — Tue, 10 Mar 2009 11:27:23 +0000

Wouldn’t it be as simple as doing this:

var result = eval(“item.Name.FirstName”);

You may not want to do this for security purposes in some cases though.

By: Colin Ramsay

Colin Ramsay — Tue, 10 Mar 2009 09:51:14 +0000

Gabriel, try putting this into the Firebug console:

var item = {
Id: 1,
Name: { FirstName: “Gabriel”, LastName: “Schenker” }
};

console.debug(item.Name.LastName);

It will output “Schenker”. Additionally, it is not “Java script” but “JavaScript”, which is an important difference to pedants like me