javascript - key length limit in object (string key length limit)

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There is no limit to the length of the key in object as long as it fits in memory.

However, some implementations or platforms may limit this depending on memory size or addressing size, e.g. 32-bit architectures.


See also:

    1. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/length