What is the problem in JavaScript recursion that is related to showing child nodes?

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The problem in JavaScript recursion related to showing child nodes is known as "maximum call stack size exceeded" error. This error occurs when a function calls itself repeatedly without an exit condition, leading to an infinite loop and eventually crashing the program. In the context of showing child nodes, this could happen if the recursive function keeps calling itself to display children without a stopping condition, leading to an overload of function calls and a memory stack overflow.