Parsing a boolean json value in jQuery

Question

In this fiddle I'm just trying to return true : http://jsfiddle.net/WCFtp/ for jQuery key 'saved'

Why do I receive the error "Uncaught SyntaxError: Unexpected token s"

Code below :

        var test = "{saved: true}";
        var jsonSaveResponse = jQuery.parseJSON(test);
        alert(jsonSaveResponse.saved);

Esailija · Accepted Answer · 2012-06-18 21:02:03Z

3

Should be var test = '{"saved": true}';.

answered Jun 18, 2012 at 21:02

Esailija

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Ned Batchelder · Accepted Answer · 2012-06-18 21:02:07Z

3

Your JSON isn't valid. Object attribute names must be quoted:

var test = '{"saved": true}';

Keep in mind, JSON is a subset of valid Javascript syntax. Lots of valid Javascript is invalid JSON.

answered Jun 18, 2012 at 21:02

Ned Batchelder

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Community · Accepted Answer · 2020-06-20 09:12:55Z

1

See the parseJSON docs.

Passing in a malformed JSON string may result in an exception being thrown. For example, the following are all malformed JSON strings:

{test: 1} (test does not have double quotes around it).

{'test': 1} ('test' is using single quotes instead of double quotes).

You'll want to use this instead:

var test = "{\"saved\": true}";

edited Jun 20, 2020 at 9:12

CommunityBot

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answered Jun 18, 2012 at 21:04

wsanville

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