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How to write a JavaScript RegExp to match an expression?
To match an expression, use the JavaScript match() method. This method is used to retrieve the matches when matching a string against a regular expression. The following is the parameter −
- param − A regular expression object.
If the regular expression does not include the g flag, it returns the same result as regexp.exec(string).
If the regular expression includes the g flag, the method returns an Array containing all the matches.
Example
You can try to run the following code to math an expression using JavaScript Regular Expression −
<html> <head> <title>JavaScript String match() Method</title> </head> <body> <script> var str = "For more information, see Chapter 3.4.5.1"; var re = /(chapter \d+(\.\d)*)/i; var found = str.match( re ); document.write(found ); </script> </body> </html>
Updated on: 23-Jun-2020
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