for example, the value I finally want to get is a.b.c.d.e , when the data structure is fixed:
a & a.b & & a.b.c & & a.b.c.d ? a & A.B & & a.b.c & & a.b.c [0] in this case js object gracefully take a depth value? you can refer to
technically, if the following code appears multiple times in the code, try using a function instead.
your question is too broad.
but one thing is that the existence of deep-seated key can only be judged step by step (recursively)
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