The double query mark operator, denoted as ??, is a logical operator in JavaScript that evaluates to its right-hand facet operand if the left-hand facet operand is null or undefined. In any other case, it evaluates to its left-hand facet operand. This operator is usually used for assigning a default worth to a variable when the variable could also be null or undefined.
One of many key advantages of utilizing the double query mark operator is that it offers a concise and readable method to deal with null and undefined values. It eliminates the necessity for prolonged if-else statements or ternary operators, making the code extra succinct and simpler to grasp.
