In JavaScript, which one is used to finding the non-whitespace

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In JavaScript, which one is used to finding the non-whitespace characters?

1. \S
2. \w
3. \d
4. \s
5. None of these

Correct Option: A

There are metacharacters defined in JavaScript. \S is used to find the non-whitespace character. \d is used for finding a digit. \s is used for finding whitespace character. \w is used to find word character. \W is used to find non word character.