What is the question mark operator?

“Question mark” or “conditional” operator in JavaScript is a ternary operator that has three operands. The expression consists of three operands: the condition, value if true and value if false. The evaluation of the condition should result in either true/false or a boolean value.

What does question mark mean in programming?

The question mark? is an alternative to an if statement best used in the case where one of two values will be assigned to a variable based on a conditional statement. The question mark is used in JavaScript as an alternative to an if statement, especially in the case where a value is assigned based on a conditional.

What is the other name for question mark operator?

The conditional (ternary) operator is the only JavaScript operator that takes three operands: a condition followed by a question mark (? ), then an expression to execute if the condition is truthy followed by a colon ( : ), and finally the expression to execute if the condition is falsy.

What is the name of (? 🙂 operator in Java?

According to the Sun Java Specification, it’s called the Conditional Operator.

Why do we use question mark in Java?

The question mark (?) is known as the wildcard in generic programming . It represents an unknown type. The wildcard can be used in a variety of situations such as the type of a parameter, field, or local variable; sometimes as a return type.

What does?= Mean in JavaScript?

Slashes: regular expression literals. Meaning of javascript text between two slashes.

Why is it called ternary operator?

The name ternary refers to the fact that the operator takes three operands. The condition is a boolean expression that evaluates to either true or false . The ternary operator is an expression (like price + 20 for example), which means that once executed, it has a value.

How many types of operators are there in Java?

Operators in Java can be classified into 5 types: Arithmetic Operators. Assignment Operators. Relational Operators.

How do you use a question mark and a colon in Java?

Almost every operator has either one or two operands. This is the only operator in Java with three operands. This is called the conditional expression or the question mark-colon operator. The two expressions, exprtrue, exprfalse should evaluate to the same type.

What does question mark do in Perl?

Question Mark – Colon operator (Perl and PHP) The? and : operator in Perl and PHP allows you to write a single statement that’s both an if and an else without the need for all the clutter of keywords, extra variables, and so on if all you want to do is come up with two alternative words.

How many types of operators in JavaScript?

JavaScript includes various categories of operators: Arithmetic operators, Comparison operators, Logical operators, Assignment operators, Conditional operators.