Eval Makes Length Undefined

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unemployment
Posts: 165
Joined: Fri May 06, 2011 5:02 pm

Eval Makes Length Undefined

Post by unemployment »

I have a json encoded array
{"users":[{"row_id":"1","0":"Tom","1":"Cruise","2":"tomcruise","3":"1","4":"231","5":"10","6":"Old","7":"235","8":"532","9":"12"},{"row_id":"21","0":"mrs. tom","1":"cruise","2":"place","3":"0","4":null,"5":null,"6":null,"7":"6","8":"42","9":"0"}]}
My javascript is...
var search 	        = eval('(' + resp + ')');
var search_wrap 	=[];
			
alert(search.length);
When my function returns the json encoded array, my alert is undefined. Is this because my array is multidimensional?
Array
(
   [users] => Array
       (
           [0] => Array
               (
                   [row_id] => 1
                   [0] => Tom
                   [1] => Cruise
                   [2] => tomcruise
               )

           [1] => Array
               (
                   [row_id] => 21
                   [0] => mrs tom
                   [1] => cruise
                   [2] => mrstomcruise
               )

       )

)
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jacek
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Posts: 3262
Joined: Thu May 05, 2011 1:45 pm
Location: UK
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Re: Eval Makes Length Undefined

Post by jacek »

unemployment wrote: Is this because my array is multidimensional?
No it's because objects don't have a length property ;)

You can do
search.users.length;
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unemployment
Posts: 165
Joined: Fri May 06, 2011 5:02 pm

Re: Eval Makes Length Undefined

Post by unemployment »

jacek wrote:
unemployment wrote: Is this because my array is multidimensional?
No it's because objects don't have a length property ;)

You can do
search.users.length;
Yes, you're right. You can basically do what you suggested.
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