RegExp Object
A regular expression is an object that describes a pattern of characters.
Regular expressions are used to perform pattern-matching and "search-and-replace" functions on text.
Creating a regular expression:
var re = /ab+c/;
var re = new RegExp('ab+c'); | Method | Description |
|---|---|
| exec | A RegExp method that executes a search for a match in a string. It returns an array of information or null on a mismatch. |
| test | A RegExp method that tests for a match in a string. It returns true or false. |
| match | A String method that executes a search for a match in a string. It returns an array of information or null on a mismatch. |
| matchAll | matchAll A String method that returns an iterator containing all of the matches, including capturing groups. |
| search | A String method that tests for a match in a string. It returns the index of the match, or -1 if the search fails. |
| replace | A String method that executes a search for a match in a string, and replaces the matched substring with a replacement substring. |
| split | A String method that uses a regular expression or a fixed string to break a string into an array of substrings. |
| Description | |
|---|---|
| . | matches any character except line breaks. Equivalent to [^\n\r]. |
| \w | matches any word character (alphanumeric & underscore). |
| \d | matches any digit character (0-9). Equivalent to [0-9]. |
| \s | matches any whitespace character (spaces, tabs, line breaks). |
| [ABC] | matches any character in the set. |
| [^ABC] | matches any character is not in the set. |
| [A-Z] | matches a character having a character code between the two specified characters inclusive. |
| [A-Z] | matches a character having a character code between the two specified characters inclusive. |
| + | matches 1 or more of the preceding token. |
| * | matches 0 or more of the preceding token. |
| ? | matches 0 or 1 of the preceding token, effectively making it optional. |
| | | acts like a boolean OR. |
| [A-Z] | matches a character having a character code between the two specified characters inclusive. |
Your pattern should match the highlighted words in the text section
Pattern TextHighlight word which matches given pattern and press add
Pattern