regular expression guide code example
Example 1: regular expression characters
/* shorthand character classes */
regex = /d/; // matches any digit, short for [0-9]
regex = /D/; // matches non-digits, short for [^0-9]
regex = /S/; // matches non-white space character
regex = /s/; // matches any white space character
regex = /w/; // matches character, short for [a-zA-Z_0-9]
regex = /W/; // matches non-word character [^w]
regex = /b/; // Matches a word boundary where a word character is [a-zA-Z0-9_]
Example 2: regex examples
a(bc) parentheses create a capturing group with value bc -> Try it!a(?:bc)* using ?: we disable the capturing group -> Try it!a(?<foo>bc) using ?<foo> we put a name to the group -> Try it!