javascript - SyntaxError: Unexpected Number (JSON.parse) - Stack Overflow

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My JSON string,

JSON.parse('{"start_date_time": ["2012-12-05 04:45:42.135000", "None"], "terminal_no": ["T1081", "None"], "master_doc_no": ["100008", "100008"], "notes": ["", ""], "doc_no": ["1000018", "1000019"], "location_code": ["1005", "1005"], "end_date_time": ["2012-12-05 05:27:04.529000", "None"], "doc_status": ["CC Ended", "Draft"], "bc_list": ["[{\"465\":\"85\"},{\"306\":\"6\"},{\"306\":\"47\"},{\"306\":\"366\"},{\"306\":\"634\"}]", "[{\"257\":\"14\"}]"]}')

But its throwing SyntaxError: Unexpected Number

Where am i wrong over here?

My JSON string,

JSON.parse('{"start_date_time": ["2012-12-05 04:45:42.135000", "None"], "terminal_no": ["T1081", "None"], "master_doc_no": ["100008", "100008"], "notes": ["", ""], "doc_no": ["1000018", "1000019"], "location_code": ["1005", "1005"], "end_date_time": ["2012-12-05 05:27:04.529000", "None"], "doc_status": ["CC Ended", "Draft"], "bc_list": ["[{\"465\":\"85\"},{\"306\":\"6\"},{\"306\":\"47\"},{\"306\":\"366\"},{\"306\":\"634\"}]", "[{\"257\":\"14\"}]"]}')

But its throwing SyntaxError: Unexpected Number

Where am i wrong over here?

• javascript
• json
• parsing

Share Improve this question Follow asked Dec 15, 2012 at 4:46 Niks JainNiks Jain 1,64755 gold badges2727 silver badges5353 bronze badges 2

• Validates just fine using JSONLint: jsonlint. Is there any more information about the error? – Hunter McMillen Commented Dec 15, 2012 at 4:49
• @HunterMcMillen, The error definitely occurs. Throw it in your browser console. It has to do with bc_list data. – Brad Commented Dec 15, 2012 at 5:01

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2 Answers 2

Sorted by: Reset to default 5

You can start by simplifying this down to where the problem occurs, in bc_list...

JSON.parse('{"bc_list": ["", "{\"257\":\"14\"}]"]}')

The issue is that your backslashes are being considered for the outer quotes on JSON.parse() instead of the inner data. You must escape the backslashes as well.

JSON.parse('{"bc_list": ["", "{\\"257\\":\\"14\\"}]"]}')

Your whole line fixed bees:

JSON.parse('{"start_date_time": ["2012-12-05 04:45:42.135000", "None"], "terminal_no": ["T1081", "None"], "master_doc_no": ["100008", "100008"], "notes": ["", ""], "doc_no": ["1000018", "1000019"], "location_code": ["1005", "1005"], "end_date_time": ["2012-12-05 05:27:04.529000", "None"], "doc_status": ["CC Ended", "Draft"], "bc_list": ["[{\\"465\\":\\"85\\"},{\\"306\\":\\"6\\"},{\\"306\\":\\"47\\"},{\\"306\\":\\"366\\"},{\\"306\\":\\"634\\"}]", "[{\\"257\\":\\"14\\"}]"]}')

Don't use JSON data within strings within JSON data. It's a mess.

This normally means your you are missing an operator, or have an illegal operator, in a calculation.

For example:

var a = 1000 * 1000; // correct
var b = 1000 1000;   // incorrect
var c = 1234;        // correct
var d = 1,234;       // incorrect

vars b and d will result in:

Uncaught SyntaxError: Unexpected number

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