undefined occupies memory, has a fixed size, and is stored in the stack area, so z occupies memory. xy objects exist in the heap area, and theirmemory addressesare stored in stack memory. Because y has more undefined, it occupies more heap memory than x.
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undefined occupies memory, has a fixed size, and is stored in the stack area, so z occupies memory. xy objects exist in the heap area, and theirmemory addressesare stored in stack memory. Because y has more undefined, it occupies more heap memory than x.