Parsing JSON String with JSON.stringify

Question

Trying to parse the JSON content from AWS SQS.

First converting a string to JSON String and then to JSON Object. What is the correct way to handle this scenario ?

<script>

// JSON from SQS 
var x='{"Message":"{\"default\":{\\\"key1\\\":\\\"value1\\\",\\\"key2\\\":\\\"value2\\\"}\"}","Timestamp":"2018-03-20T03:21:32.136Z"}';
x1=JSON.stringify(x);
var obj = JSON.parse(x1);
console.log(obj.Message); // undefined
alert(obj["Message"]); // undefined 
</script>

What on earth are you doing to need all that escaping? Is the JSON rendered directly into your JS code, or is it retrieved by AJAX? — lonesomeday
– lonesomeday, Commented Mar 20, 2018 at 21:15
Firstly, you're stringifying a string. Secondly, you did not declare a variable for x1. Thirdly, your string is not a valid string. Open developers tool in chrome and run those expressions step by step and you'll see the error — supritshah1289
– supritshah1289, Commented Mar 20, 2018 at 21:58

phuzi · Accepted Answer · 2018-03-21 09:11:16Z

1

I have absolutely no idea why you are trying to JSON.stringify() a string. It's already a string!

The string you have got is not valid JSON either and needs a few extra \\s in it. Where did you get it from? Or was it a typo.

var x='{"Message":"{\\\"default\\\":{\\\"key1\\\":\\\"value1\\\",\\\"key2\\\":\\\"value2\\\"}\\\"}","Timestamp":"2018-03-20T03:21:32.136Z"}';
                    ^__________^_____________________________________________________________^

Just parse the JSON you do have then realise that obj.Message is just more JSON that could be JSON.parse()d

// JSON
var x = '{"Message":"{\\\"default\\\":{\\\"key1\\\":\\\"value1\\\",\\\"key2\\\":\\\"value2\\\"}\\\"}","Timestamp":"2018-03-20T03:21:32.136Z"}';
//Parse JSON
var obj = JSON.parse(x);
console.log(obj.Message); // string formatted as yet more JSON

edited Mar 21, 2018 at 9:11

answered Mar 20, 2018 at 21:42

phuzi

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Comments

Basavaraj Bhusani · Accepted Answer · 2018-03-20 21:19:45Z

1

The string is not right. It should be like

var x='{"Message":"{\\\"default\\\":{\\\"key1\\\":\\\"value1\\\",\\\"key2\\\":\\\"value2\\\"}\\\"}","Timestamp":"2018-03-20T03:21:32.136Z"}';

You are stringifying the x, which is already string

x1=JSON.stringify(x); //Not ok

answered Mar 20, 2018 at 21:19

Basavaraj Bhusani

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