the start or end of the string. Use a caret or dollar instead. • Lookbehind is not supported at all. Lookahead is fully supported. • No atomic grouping or possessive quantifiers • No Unicode support, except for matching single characters with • No named capturing groups. Use numbered capturing groups instead. • No mode modifiers to set matching options within the regular expression. • No conditionals. • No regular expression comments. Describe your regular expression with JavaScript // comments instead, outside the regular expression string.
breaks if dotall is false. • * – Matches 0 or more of the preceding character. • + – Matches 1 or more of the preceding character. • ? – Preceding character is optional. Matches 0 or 1 occurrence. • \d – Matches any single digit • \w – Matches any word character (alphanumeric & underscore). • [XYZ] – Matches any single character from the character class. • [XYZ]+ – Matches one or more of any of the characters in the set. • $ – Matches the end of the string. • ^ – Matches the beginning of a string. • [^a-z] – When inside of a character class, the ^ means NOT; in this case, match anything that is NOT a lowercase letter. • {3,} – Limiting Repetition
jiguang
jonyablonski
tammielis
takai
kimpetersen
holman
schlessera
stephenakadiri
jnunemaker
reverentgeek
jonoalderson
aleyda
smashingmag
![Advanced • Character Classes/Sets – [cat] or [^cat] [\w+] •](https://files.speakerdeck.com/presentations/99ec39400c530130abb2123139154813/slide_6.jpg){kind=link}
