Blog Post
Understanding Regular Expressions ✨
Regular expressions are patterns used to match character combinations in strings. They are widely used for tasks such as text searching, validation, and manipulation.
📞 US Phone Number Example: /(\+1)[-.]?(\d{3})?[-.]?(\d{3})?(\d{4})/
Let's break this down:
Code
/: Forward slash indicates the start and end of the regex pattern.
(\+1): Matches the country code for the US, which is +1.
[-.]?: Indicates that a hyphen or period may optionally separate the country code from the next part of the number.
(\d{3})?: Matches three digits, typically the area code, and is optional as denoted by the question mark.
[-.]?: Optionally matches a separator (either a hyphen or a period) between the area code and the local number.
(\d{3}): Matches three digits of the local number.
(\d{4}): Matches the last four digits of the local number.Regular expressions are extremely powerful, but they can be complex. Make sure to test your regular expressions to ensure they're working as expected!