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up vote 1 down vote favorite

I'm using Node.js and express (3.x). I have to provide an API for a mac client and from a post request I extract the correct fields. (The use of request.param is mandatory) But the fields should be composed back together to JSON, instead of strings.

I got:

var obj = {
        "title": request.param('title'),
        "thumb": request.param('thumb'),
        "items": request.param('items')
    };

and request.param('items') contains an array of object but still as a string:

'[{"name":"this"},{"name":"that"}]'

I want to append it so it becomes:

var obj = {
            "title": request.param('title'),
            "thumb": request.param('thumb'),
            "items": [{"name":"this"},{"name":"that"}]
        };

Instead of 

var obj = {
                "title": request.param('title'),
                "thumb": request.param('thumb'),
                "items": "[{\"name\":\"this\"},{\"name\":\"that\"}]"
            };

Anyone who can help me with this? JSON.parse doesn't parse an array of object, only valid JSON.

share|improve this question

3 Answers 3

up vote 5 down vote accepted

How about this:

var obj = JSON.parse("{\"items\":" + request.param('items') + "}");
obj.title = request.param('title');
obj.thumb = request.param('thumb');

JSON.stringify(obj);
share|improve this answer
    
Thanks for answering so (very) fast, did the trick –  emiel187 Jul 16 '13 at 10:25
up vote 0 down vote

May be you have old library Prototype. As I remove it, bug has disappeared.

You can try the same code. Once in page with Prototype.js. Second time in new page without library.

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up vote 2 down vote

Perhaps I'm missing something, but this works just fine:

> a = '[{"name":"this"},{"name":"that"}]';
'[{"name":"this"},{"name":"that"}]'
> JSON.parse(a)
[ { name: 'this' }, { name: 'that' } ]

[email protected]

share|improve this answer
    
Parsing an array works for me too. Dunno what OP was doing. –  Amberlamps Jul 16 '13 at 10:58

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