How do you specify a range of characters in a character class?
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
In a character class, you can specify a range of characters by using a hyphen (-) between two characters. For example, the regular expression "[a-z]" matches any lowercase letter from "a" to "z". Similarly, the regular expression "[0-9]" matches any digit character from "0" to "9". Note that the range is inclusive, so the characters at both ends are included in the match.
Candidate Response Strategy & Interview Tips
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