Что будет в консоли / Разбираем ['1', '2', '3'].map(parseInt)

A friend of mine (Sasha, hi!) gave me this problem to solve. Take a look at this single line of code and try your hand at being a JavaScript engine. What will be the output? ['1', '2', '3'].map(parseInt); // ? So, let's check? Drumroll: [1, NaN, NaN] If your answer matches, feel free to turn off this video. I have nothing new to tell you. But if the answer doesn't match, let's figure it out. Contents: 00:00 Problem Statement 00:39 Writing the Code 01:35 Checking the Answer 02:49 The ParseInt Method 03:56 The Map Method 05:20 Examining the Code 06:43 Problem Found 08:19 Summary Useful Links: My blog on Telegram: https://t.me/antonovjs https://developer.mozilla.org/en-US/d... https://developer.mozilla.org/en-US/d...