How do I use regex in JavaScript?
You can use the RegExp object or regex literals. For example, /pattern/
is a regex literal.
Can you show me an example of validating an email address?
Sure! You can use this regex: /^[\w-\.]+@[\w-]+\.[a-z]{2,4}$/
to validate email addresses.
What does each part of that regex mean?
The ^
asserts the start, \w
matches word characters, -
allows hyphens, and \.
matches a dot.
How can I test regex patterns in JavaScript?
You can use the .test()
method on a regex object, like regex.test(string)
, to test if a string matches.
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