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This article mainly introduces "what is the syntax of JavaScript regular expressions". In daily operation, I believe that many people have doubts about the syntax of JavaScript regular expressions. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts about "what is the syntax of JavaScript regular expressions". Next, please follow the editor to study!

A regular expression is a sequence of characters that make up a search pattern.

This search mode can be used for text search and text replacement operations.

What is a regular expression?

A regular expression is a sequence of characters that make up a search pattern (search pattern).

When you search for data in text, you can use search patterns to describe what you are searching for.

Regular expressions can be single characters or more complex patterns.

Regular expressions can be used to perform all types of text search and text replacement operations.

Grammar

/ pattern/modifiers

Example

Var patt = / w3school/i

Examples explain:

/ w3school/i is a regular expression.

W3school is a pattern (used in search).

I is the modifier (change the search to be case-insensitive).

At this point, the study of "what is the syntax of JavaScript regular expressions" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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