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How JavaScript Array Works Internally?
- olliej 5y agoNowadays JSC and V8 both store objects and arrays the same way at this point, the only difference is the magic behavior of the length property that’s exposed. Shift and unshift attempt to just move a pointer into the numeric storage of the object rather than
- eyelidlessness 5y ago> Avoid giving the initial capacity to the array This isn’t necessarily right. It’s perfectly fine to do: Array(n).fill() Which returns a dense array.
- rasz 5y agoIt performs a copy, does nothing to the initial array.