December 28, 20222 min read

Regex for Round Brackets

Round Brackets is represented by () and can be keyed in using the keyboard using the SHIFT + ( or SHIFT + ) in most computers. In this article let's understand how we can create a regex for round brackets and how regex can be matched for round brackets values.

Regex (short for regular expression) is a powerful tool used for searching and manipulating text. It is composed of a sequence of characters that define a search pattern. Regex can be used to find patterns in large amounts of text, validate user input, and manipulate strings. It is widely used in programming languages, text editors, and command line tools.

Conditions to match a Round Brackets

The value () should be present in the string.

Regex for checking if its a valid Round Brackets

Regular Expression-


Test string examples for the above regex-

Input StringMatch Output
zerodoes not match
1does not match

Here is a detailed explanation of the above regex-


Match a single character present in the list below [()]
() matches a single character in the list () (case sensitive)
Global pattern flags
g modifier: global. All matches (don't return after first match)
m modifier: multi line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)

Hope this article was useful to check the validity of a round brackets value using regex.

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About the Author
Satvik is a passionate developer turned Entrepreneur. He is fascinated by JavaScript, Operating System, Deep Learning, AR/VR. He has published several research papers and applied for patents in the field as well. Satvik is a speaker in conferences, meetups talking about Artificial Intelligence, JavaScript and related subjects. His goal is to solve complex problems that people face with automation. Related projects can be seen at - [Projects](/projects)
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