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date | id | title |
---|---|---|
20201116 | 64df7704-1f31-4da6-95f3-2747a031fbf9 | Nullish coalescing operator (??) |
Description
Returns right-hand side operand when it's left-hand side operand is
null
or undefined
, and otherwise returns its left-hand side operand.
Syntax
const foo = null ?? 'default string';
console.log(foo); // default string
const baz = 0 ?? 42;
console.log(baz); // 0