What is the underlying data structure of Array and Object in JS?

because of the splice method, I once thought that the bottom of Array was a linked list, but it didn"t seem to be

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Sep.05,2021

this problem depends on the specific implementation. After all, the pure JS language is only a specification, which specifies what operations Array and Object should support, and the specific operation implementation is the responsibility of the specific JS engine

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I searched Baidu, and someone on Zhihu wrote an article about the implementation of Array and Object in Chrome V8 engine
https://zhuanlan.zhihu.com/p/.

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