If you don’t want a negated character class to match line breaks, you need to include the line break characters in the class.

Unlike the dot, negated character classes also match (invisible) line break characters. The result is that the character class matches any character that is not in the character class.

Typing a caret after the opening square bracket negates the character class. You can find a C-style hexadecimal number with 0 +. You can find an identifier in a programming language with *. You can find a word, even if it is misspelled, such as sep r te or li en e. Again, the order of the characters and the ranges does not matter.Ĭharacter classes are one of the most commonly used features of regular expressions. matches a hexadecimal digit or the letter X. You can combine ranges and single characters. matches a single hexadecimal digit, case insensitively. You can use a hyphen inside a character class to specify a range of characters. The order of the characters inside a character class does not matter. gr y does not match graay, graey or any such thing. Very useful if you do not know whether the document you are searching through is written in American or British English.Ī character class matches only a single character. You could use this in gr y to match either gray or grey. Simply place the characters you want to match between square brackets. With a “character class”, also called “character set”, you can tell the regex engine to match only one out of several characters.

Jquery grep regex