Javascript cannot parse JSON string

Question

I was trying to parse this JSON string:

{"query": "my schedule today","type": "timeline","title": "Today events:","time":["2015-07-06\n20:30:00"],"summary":["Weekly meeting + Show & Tell (Hangout)"],"description":["Weekly Bullets (20 minutes): "]}

This is a valid JSON (checked on jsonformatter.curiousconcept.com). However, I received erorr:

SyntaxError: Unexpected token

in (file angular.js):

function fromJson(json) {
    return isString(json)
        ? JSON.parse(json)
        : json;
}

Anyone has ideas?

Try posting a demo, there is a button in the toolbar to demonstrate your issue. Or try jsfiddle.net — elclanrs
– elclanrs, Commented Jul 6, 2015 at 4:03

J. Campbell · Accepted Answer · 2018-02-27 14:13:13Z

4

The problem is the \n in the text, you need to escape it to \\n

var json = '{"query": "my schedule today","type": "timeline","title": "Today events:","time":["2015-07-06\\n20:30:00"],"summary":["Weekly meeting + Show & Tell (Hangout)"],"description":["Weekly Bullets (20 minutes): "]}'

console.log(JSON.parse(json))
snippet.log(JSON.stringify(JSON.parse(json)))

<!-- Provides the `snippet` object, see http://meta.stackexchange.com/a/242144/134069 -->
<script src="http://tjcrowder.github.io/simple-snippets-console/snippet.js"></script>


<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>

If the string you are working with is the result of an external call and you can't change the \n to \\n manually, then this can be achieved with a simple replace:

json = json.replace(/\\n/g, "\\\n");

edited Feb 27, 2018 at 14:13

J. Campbell

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answered Jul 6, 2015 at 4:07

Arun P Johny

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2 Comments

Hưng Cao Xuân Over a year ago

thanks but this is actually not about "\n" problem. What I posted was a JSON data, not a string. I tried removing it and there was the same error. I think the problem is in the key "description" because it ran fine when I delete the last space in "Weekly Bullets (20 minutes): "

Arun P Johny Over a year ago

@HưngCaoXuân in that case you need to share your complete code... like the isString() method and a way to recreate the issue

hungndv · Accepted Answer · 2015-07-06 04:06:09Z

0

Here you are, a \n token in your string, let remove it:

var data = '{"query": "my schedule today","type": "timeline","title": "Today events:","time":["2015-07-06\n20:30:00"],"summary":["Weekly meeting + Show & Tell (Hangout)"],"description":["Weekly Bullets (20 minutes): "]}'.replace('\n', '');
var data = JSON.parse(data);
alert(data.query);

Hope this helps.

answered Jul 6, 2015 at 4:06

hungndv

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