How to simplify the expression "data && data.pwd && data.pwd.length"?

Question

I'm sorry if this question has been asked several times and in much clearer terms, but I just don't know the technical term for what I'm looking for. I'm trying to write a conditional statement in the following way:

if (data && data.password && data.password.length > 7) {// Do something}

But I know there is a simpler way to write this. Something like

if (data?password?length > 7) {// Do something}

What would be the correct formulation? What is the technical term for this type of expressions?

Close. [`if (data?.password?.length > 7) {...}`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Optional_chaining). — Andy, Sep 14 '21 at 11:24
Optional Chaining https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Optional_chaining — Karma Blackshaw, Sep 14 '21 at 11:24

score 3 · Answer 1 · answered Sep 14 '21 at 11:25

3

Concept you are looking for is called Optional Chaining

You can modify to : data?.password?.length

answered Sep 14 '21 at 11:25

Sagar

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How to simplify the expression "data && data.pwd && data.pwd.length"?

1 Answers1