Javascript parse JSON string

Question

Folks, DynamoDB call returns a JSON Object, which I would like to parse, and grab the password hash field

jsonString = JSON.stringify(data)
console.log(jsonString)

output:

{"Count":1,"Items":[{"token":{"S":"token"},"uid":{"S":"33c02130-66b5-11e3-bdb0-7d9889f293b5"},"password":{"S":"$2a$10$ervzJ.DWjHOXRtJSugTaWuquI2OvPLyipa4YXecc/2KdQnmhrHxr6"},"username":{"S":"foo"},"plate":{"S":"dinner"},"name":{"S":"Test Name"},"server":{"S":"bar"}}]}

How would i parse this string, and retrieve the 'password' field? The following code does not work:

console.log(jsonString.password)
console.log(jsonString.uid)

The following returns undefined:

console.log(data.password);

Thanks!

@PSL unfortunately that does not work, i get back 'undefined' — Cmag, Dec 17 '13 at 01:17
@Clive, closer! { S: '$2a$10$ervzJ.DWjHOXRtJSugTaWuquI2OvPLyipa4YXecc/2KdQnmhrHxr6' } — Cmag, Dec 17 '13 at 01:19
If you don't stringify it, it would probably be much easier. — adeneo, Dec 17 '13 at 01:21
@Cmag, show us your ajax call. You don't need to `stringify(data)`. Your call, I suspect, has already taken the JSON string and converted it to an object, which is what you want. You can then do `data.Items[0].password.S` to get what you want. — Jonathan M, Dec 17 '13 at 01:25
possible duplicate of [Access / process (nested) objects, arrays or JSON](http://stackoverflow.com/questions/11922383/access-process-nested-objects-arrays-or-json) — Felix Kling, Dec 17 '13 at 01:53

score 1 · Accepted Answer · edited Dec 17 '13 at 01:54

1

This is already an object, so you can do this:

var str = {"Count":1,"Items":[{"token":{"S":"token"},"uid":{"S":"33c02130-66b5-11e3-bdb0-7d9889f293b5"},"password":{"S":"$2a$10$ervzJ.DWjHOXRtJSugTaWuquI2OvPLyipa4YXecc/2KdQnmhrHxr6"},"username":{"S":"foo"},"plate":{"S":"dinner"},"name":{"S":"Test Name"},"server":{"S":"bar"}}]};

alert(str.Items[0].password.S);

edited Dec 17 '13 at 01:54

Felix Kling

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answered Dec 17 '13 at 01:18

Ringo

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Not quite. While your example works, it misrepresents what actually is happening here. His `data`, like your `str` is not a string, but an object. His `data` object should not be `stringify`'d as he posted, but just used as it is. Like this: `data.Items[0].password.S`. – Jonathan M Dec 17 '13 at 01:28

Javascript parse JSON string

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