The JavaScript double query mark operator (??) is a logical operator that returns the primary operand whether it is truthy, and the second operand whether it is falsy. It’s usually used to offer a default worth for a variable or to examine if a variable is null or undefined.
The double query mark operator is a robust software that can be utilized to enhance the readability and maintainability of your code. It could actually additionally assist to stop errors by making certain that variables are all the time assigned a sound worth.
