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VistasHow to properly escape question mark in regex?
I have regex below that should detect interrogative sentence. But the problem is it does not include the question mark when I test it in regexr.com
Someone knows what is missing? thanks
Here's my regex (i tried to use double backlash but still not work):
\bWhat’s up\\?\b
Tested string: "Subject: What’s up? Christie"
Here's regexr: https://regexr.com/65l08
Image:
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Juan Pablo Isaza
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Two issues:
Firstly to escape a ? character, you only need a single backslash. Two backslashes will match a literal \ character. (MDN: Character Classes)
Secondly, a ? is not a word character. \b matches the boundary between a word and a non-word character: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Assertions
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Juan Pablo Isaza
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