JSON.Parse error - node.js

Question

I'm trying to parse the get param to JSOn with the following code:

   var query = req.query.query; // 
    query = JSON.parse(query);

the value of `req.query.query is:

{'$or': [ { '_id':ObjectId('54ff5ed8d094b1e371fba0a7')}, {'_id':ObjectId('54ffcc00bef7ea3b78d11789')} ]}

I have tried too:

var query = req.query.query; // 
 query = JSON.parse(" {'$or': [ { '_id':ObjectId('54ff5ed8d094b1e371fba0a7')}, {'_id':ObjectId('54ffcc00bef7ea3b78d11789')} ]}");

In both I got the error:

SyntaxError: Unexpected token '
at Object.parse (native)
at app.get.collectionOcorrencias (/home/ladessa/files/MelhoraCidade/server/app.js:89:23)
at Layer.handle [as handle_request] (/home/ladessa/files/MelhoraCidade/server/node_modules/express/lib/router/layer.js:82:5)
at next (/home/ladessa/files/MelhoraCidade/server/node_modules/express/lib/router/route.js:100:13)
at Route.dispatch (/home/ladessa/files/MelhoraCidade/server/node_modules/express/lib/router/route.js:81:3)
at Layer.handle [as handle_request] (/home/ladessa/files/MelhoraCidade/server/node_modules/express/lib/router/layer.js:82:5)
at /home/ladessa/files/MelhoraCidade/server/node_modules/express/lib/router/index.js:235:24
at Function.proto.process_params (/home/ladessa/files/MelhoraCidade/server/node_modules/express/lib/router/index.js:313:12)
at /home/ladessa/files/MelhoraCidade/server/node_modules/express/lib/router/index.js:229:12
at Function.match_layer (/home/ladessa/files/MelhoraCidade/server/node_modules/express/lib/router/index.js:296:3)

Community · Accepted Answer · 2017-05-23 12:22:13Z

1

While Muhammad Ali is correct that you can only use double quotes " in valid JSON, there's a bigger issue. Neither ObjectId nor any other sort of function call can occur in valid JSON, so your string is not going to be parsable by any standard function. I suspect that you're going to have to parse it yourself unless you can change the format in which you're receiving the query from the client.

edited May 23, 2017 at 12:22

CommunityBot

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answered Mar 13, 2015 at 5:22

Aaron Dufour

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Muhammad Ali · Accepted Answer · 2015-03-13 04:53:57Z

0

Replace single quote with double quote and double quote with single quote

JSON.parse('{"$or": [ { "_id":ObjectId("54ff5ed8d094b1e371fba0a7")}, {"_id":ObjectId("54ffcc00bef7ea3b78d11789")} ]}')

answered Mar 13, 2015 at 4:53

Muhammad Ali

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