What are various operators supported by javascript?
Interviewer Expectations for this Question
01
Core Competency
Assesses fundamental understanding of JavaScript conventions, runtime behavior, and memory/performance considerations.
02
Evaluation Criteria
Hiring managers look for precision, avoidance of ambiguous jargon, and ability to explain trade-offs under real production conditions.
Comprehensive Model Answer
Verified Solution
An operator is capable of manipulating(mathematical and logical computations) a certain value or operand. There are various operators supported by JavaScript as below,
- Arithmetic Operators: Includes + (Addition), – (Subtraction), \* (Multiplication), / (Division), % (Modulus), ++ (Increment) and – – (Decrement)
- Comparison Operators: Includes == (Equal), != (Not Equal), === (Equal with type), > (Greater than), >= (Greater than or Equal to), < (Less than), <= (Less than or Equal to)
- Logical Operators: Includes && (Logical AND), || (Logical OR), ! (Logical NOT)
- Assignment Operators: Includes = (Assignment Operator), += (Add and Assignment Operator), –= (Subtract and Assignment Operator), \*= (Multiply and Assignment), /= (Divide and Assignment), %= (Modules and Assignment)
- Ternary Operators: It includes conditional(: ?) Operator
- typeof Operator: It uses to find type of variable. The syntax looks like
typeof variable
Candidate Response Strategy & Interview Tips
- Start with a concise one-sentence summary: Deliver a direct, confident answer first before expanding into nuances.
- Demonstrate real-world trade-offs: Discuss where this approach excels and when you would avoid it in production systems.
- Discuss complexity & edge cases: Proactively explain time/space complexity or boundary conditions (null values, scale limits).
- Prepare for interviewer follow-ups: Technical hiring panels frequently probe deeper into concurrency, backward compatibility, or alternative libraries.