How to prevent TypeError: e.target.getAttribute is not a function? [closed]

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What I’m trying to do is the inner code (result) will only work when there’s an attribute of Validity. But since my target doesn’t have an attribute of Validity, I want to prevent the inner code to run by having an if checking.

What can I do to check/prevent the error of TypeError: e.target.getAttribute is not a function?

Answer

use optional chaining or hasOwnProperty() method

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