Optional chaining, javascript new features 2020

Published: 20 February 2020
on channel: Shrideep ghag

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Optional chaining javascript2020
The optional chaining operator ?. permits reading the value of a property located deep within a chain of connected objects without having to expressly validate that each reference in the chain is valid.
The optional chaining operator provides a way to simplify accessing values through connected objects when it's possible that a reference or function may be undefined or null.
Using optional chaining with function calls causes the expression to automatically return undefined instead of throwing an exception if the method isn't found

Supported browsers
Chrome v80
firefox v73
Opera v67

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