"Discrepancy in results between JSON stringify and JavaScript object conversion

I need to save this object in a database, but first I have to send it to the backend.

Recorder {config: Object, recording: false, callbacks: Object, context: AudioContext, node: ScriptProcessorNode…}

However, after using JSON.stringify(recorder)

The resulting output is as follows:

{"config":{"bufferLen":4096,"numChannels":2,"mimeType":"audio/wav"},"recording":false,"callbacks":{"getBuffer":[],"exportWAV":[]},"context":{},"node":{},"worker":{}}

Why is the context part missing?

I discovered that this is because 'context' is a nested object. How can I use JSON.stringify on a nested object?

javascriptjson

Answer №1

JSON.stringify() is designed to work only with standard JavaScript objects created using Object(). It will not function correctly with specialized objects like the ones found in your code snippet: 

context: AudioContext, node: ScriptProcessorNode
. When used with such objects, JSON.stringify will only store their properties and values, not their actual behavior.

If you have special classes of objects that need to be serialized, you can utilize the serialijse plugin which can be found on GitHub.

To implement this solution, download the plugin and use it for converting the object into a string format suitable for storing in a database on the backend.

var serialize = serialijse.serialize;
var serializationString = serialize({config: Object, recording: false, callbacks: Object, context: AudioContext, node: ScriptProcessorNode…});

When retrieving the serialized data from the database and needing to convert it back to its original object form:

var deserialize = serialijse.deserialize;
var deserializationString = deserialize(serializationString);

I hope these instructions prove helpful to you.

Answer №2

Remember to utilize JSON.parse() prior to converting it to a string for database usage (utilizing JSON.stringify()) and ensure that you are extracting the contextparts during parsing.

Hope this helps!

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