JavaScript Optional Chaining with Array Index

JavaScript optional chaining works with array indexes. Just add the ?. before your square brackets []. Looks weird, but it works!

const characters = [ { name: 'Jean-Luc Picard', age: 59 }, { name: 'Will Riker', age: 29 } ]; // `?.[2]` is how you access the 2nd element with optional chaining characters?.[2]?.age; // undefined characters?.[1].age; // 29 characters[1]?.doesnt?.exist; // undefined

You can't use ?. with a number, that causes a syntax error. But you can also use ?.[] with variables as follows.

const index = 1; characters?.[index].age; // 29

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