Can I stringify functions and `undefined` values using `JSON.stringify()`?

By: USER3363
24 Agustus 2025 Support 5 minutes
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Grade: Education Subject: Support
Can I stringify functions and `undefined` values using `JSON.stringify()`?
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No, functions and `undefined` values are automatically omitted when using `JSON.stringify()`. If a function is encountered as a property value, it's simply not included in the resulting JSON string. `undefined` values are also ignored. You can control this behavior with the replacer function.
Answered on 24 Agustus 2025

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