Aug 26 2025 The nullish coalescing ?? operatoris a logicaloperatorthat returns its right hand side operand when its left hand side operand is null or undefined and otherwise returns its left hand side operand Learn about the null coalescing operator a binary operator that returns the left operand if it is not null and the right operand otherwise
See examples of its usage in various programming languages such as C PHP JavaScript and Perl Nov 1 2025 The null coalescingoperator?? returns the value of its left hand operand if it isn t null otherwise it evaluates the right hand operand and returns its result
The ??operatordoesn t evaluate its right hand operand if the left hand operand evaluates to non null Learn how to usethe ??operator to assign default values to variables that are null or undefined
Compare it withthe operator and see examples precedence and limitations Jan 4 2024 Learn how to use the nullish coalescing optional chaining and destructuring assignment operators in JavaScript
These operators help you write clearer and less error prone code TheNullish Coalescingoperatorin JavaScript is represented by two question marks ??
It takes two operands and returns the first operand if it is not null or undefined Jan 8 2025 In JavaScript the nullish coalescing ?? operatoris a logicaloperatorthat evaluates the left hand operand and returns it if it is not nullish i.e
not null or undefined The ORoperator uses the right value if left is falsy while the nullish coalescingoperator?? uses the right value if left is null or undefined
These operators are often used to provide a default value if the first one is missing Jul 12 2025 The nullish coalescing ?? operatoris a logicaloperatorthat returns its right hand side operand when its left hand side operand is null or undefined and otherwise returns its left hand side operand The nullish coalescing assignmentoperator sometimes referred to as the logical nullish assignmentoperator will allow you to assign a value to a variable but only if value of this variable is NULL or undefined without checking it first.
See examples of its usage in various programming languages such as C PHP JavaScript and Perl Nov 1 2025 The null coalescingoperator?? returns the value of its left hand operand if it isn t null otherwise it evaluates the right hand operand and returns its result
The ??operatordoesn t evaluate its right hand operand if the left hand operand evaluates to non null Learn how to usethe ??operator to assign default values to variables that are null or undefined
Compare it withthe operator and see examples precedence and limitations Jan 4 2024 Learn how to use the nullish coalescing optional chaining and destructuring assignment operators in JavaScript
These operators help you write clearer and less error prone code TheNullish Coalescingoperatorin JavaScript is represented by two question marks ??
It takes two operands and returns the first operand if it is not null or undefined Jan 8 2025 In JavaScript the nullish coalescing ?? operatoris a logicaloperatorthat evaluates the left hand operand and returns it if it is not nullish i.e
not null or undefined The ORoperator uses the right value if left is falsy while the nullish coalescingoperator?? uses the right value if left is null or undefined
These operators are often used to provide a default value if the first one is missing Jul 12 2025 The nullish coalescing ?? operatoris a logicaloperatorthat returns its right hand side operand when its left hand side operand is null or undefined and otherwise returns its left hand side operand The nullish coalescing assignmentoperator sometimes referred to as the logical nullish assignmentoperator will allow you to assign a value to a variable but only if value of this variable is NULL or undefined without checking it first.