Why ['2','6','12'].map(parseInt) Returns [2, NaN, 1] | JS interview
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- เผยแพร่เมื่อ 13 ก.ค. 2024
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Welcome to CodeCraft Academy! In this video, we dive deep into a curious behavior in JavaScript involving the map method and the parseInt function. If you've ever been puzzled by why console.log(['2','6','12'].map(parseInt)) returns [2, NaN, 1], this video is for you.
We'll cover:
How the map method works in JavaScript
The purpose and usage of the parseInt function
The interaction between map and parseInt leading to unexpected results
A detailed breakdown of each element in the array
The common mistake developers make and how to fix it
By the end of this video, you'll have a clear understanding of this behavior and know how to avoid such issues in your own code.
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