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What question mark functionality in js

What does this question mark do in this specific code bellow https://code.sololearn.com/Wt4qxO8FCoFw/?ref=app

1/4/2022 8:24:02 AM

EsaKurniawan

4 Answers

New Answer

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https://stackoverflow.com/questions/63806017/what-does-the-question-mark-mean-in-the-return-statement-in-js // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Optional_chaining

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Let's google it! https://javascript.plainenglish.io/what-does-the-question-mark-mean-in-javascript-code-353cfadcf760 https://www.sololearn.com/Discuss/1903556/what-does-the-question-mark-mean-in-js https://www.freecodecamp.org/news/how-the-question-mark-works-in-javascript/amp/

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It's not the question mark i mean

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Yeah that is what i mean