The or operator || uses the right value if left is falsy, while the nullish coalescing operator ?? By dillion megida the nullish coalescing operator is a new logical operator in javascript introduced in es 2020. The nullish coalescing operator in javascript is represented by two question marks (??).
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In contrast, || uses falsy checks, meaning an empty string or the number 0.
It takes two operands and returns the first operand if it is not null or undefined.
These operators are often used to provide a default value if the. Uses the right value if left is null or undefined. You’re about to demystify javascript’s double question marks (??), also known as the nullish coalescing operator. And =, so consider adding parentheses when using it in an expression.
In this article, we'll understand how this operator works. It’s forbidden to use it with || or && without. It is most commonly written as x ?? It may seem odd, but it’s extremely handy when working with potential.
Y, but varies across programming languages.
