How to check for empty array result in single line filter method, I want to add validation

Asked Aug 03 '22 at 07:20

Active Aug 03 '22 at 07:20

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let x = this.currentList.filter((x) => x.Tab == this.currentTab)[0].TabSequence;

I want to add ?(validation) operator on filter result if I get empty result. Please find below. How I can handle if result is empty array then [0].TabSequence

let x = this.currentList.filter((x) => x.Tab == this.currentTab)?[0].TabSequence;

asked Aug 03 '22 at 07:20

Rohit Hushare

1

the syntax is `...)?.[0].Tab...` and you don't need `filter` in this case, it is better to go with `find` – Ahmed Lazhar Aug 03 '22 at 07:23
possible duplicate of https://stackoverflow.com/questions/59623674/how-can-i-use-optional-chaining-with-arrays-and-functions – Ahmed Lazhar Aug 03 '22 at 07:24
Site note: `filter(...)[0]` is the same as `find(...)`. Why not use `find`instead? – MoxxiManagarm Aug 03 '22 at 07:32
my main motive is about optional chaining, that I understood – Rohit Hushare Aug 03 '22 at 08:38

How to check for empty array result in single line filter method, I want to add validation

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