JavaScript compares objects by reference, not by content. Even if two arrays look identical, they live in different memory locations. The Map sees them as different keys. Here are three ways to solve ...
𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 𝗔𝗿𝗿𝗮𝘆 𝗠𝗲𝘁𝗵𝗼𝗱𝘀 Stop using manual loops for everything. JavaScript provides built-in methods to handle arrays efficiently. The .forEach () Method Use .forEach () to run ...
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