How to access nested objects with replacer param json.stringify

Question

Here is a minified example of my problem:

var myObj = {hello: {bye: "bye"} };

JSON.stringify(myObj, ['hello']);

returns "{"hello": {}}"

How can I access nested objects using the replacer array parameter?

I researched posts demonstrating the "data" parameter in an ajax request, I am not making an ajax request, I am reading json, filtering properties, and writing the results to a new file.

The replacer can be a function too, you should be able do the logic you need. — elclanrs
– elclanrs, Commented Mar 9, 2015 at 23:01
@HelloWorld what exactly are you trying to do? If you're doing filtering of object values, it's probably better to use something like lodash/underscore for that. — Yuri Zarubin
– Yuri Zarubin, Commented Mar 10, 2015 at 15:35

chrisvdb · Accepted Answer · 2015-06-01 15:54:35Z

3

The following seems to work:

JSON.stringify(myObj, ['hello', 'bye']);

But couldn't find any documentation on the topic.

answered Jun 1, 2015 at 15:54

chrisvdb

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2 Comments

Tyguy7 Over a year ago

this does not effect nested objects in my trials

exside Over a year ago

I haven't found an easy way to do that... initial thought was to just override JSON.stringify, add a 'global' replacer that applies the keys to keep to every nested call, but that's not how JSON.stringify works, if a property is not to be included in the result, any keys that don't match the replacer array are simply not traversed, e.g. the replacer never gets invoked...if someone has a nice and concise solution for this "problem", I'd love to know =)

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