RegExp, is short for regular expression.
For a complete reference of all the properties and methods that can be used with the RegExp
object, go to our complete RegExp object reference.
The reference contains a brief description and examples of use for each property and method
A regular expression is an object that describes a pattern of characters.
When you search in a text, you can use a pattern to describe what you are searching for.
A simple pattern can be one single character.
A more complicated pattern can consist of more characters, and can be used for parsing, format
checking, substitution and more.
Regular expressions are used to perform powerful pattern-matching and "search-and-replace"
functions on text.
Modifiers are used to perform case-insensitive and global searches.
The i modifier is used to perform case-insensitive matching.
The g modifier is used to perform a global match (find all matches rather than stopping after the
Do a case-insensitive search for "QcTutorials" in a string:
The marked text below shows where the expression gets a
Do a global search for "is":
Do a global, case-insensitive search for "is":
The test() method searches a string for a specified value, and returns true or false, depending
on the result.
The Below example searches a string for the character "e":
Since there is an "e" in the string, the output of the code above will
The exec() method searches a string for a specified value, and returns the text of the found
value. If no match is found, it returns null.
Your Query was successfully sent!