Shulou(Shulou.com)06/02 Report--

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

Regular expression I modifier:

The I modifier is used to specify that the matching of regular expressions is case insensitive.

Grammatical structure:

Constructor mode:

New RegExp ("regexp", "I")

Object direct quantity method:

/ regexp/i

Browsers support:

IE browsers support this metacharacter.

Firefox browser supports this metacharacter.

Google browser supports this metacharacter.

Example code:

Var str= "This is an antzone good"; var reg=/this/;console.log (str.match (reg))

The above code cannot match anything because it is case-sensitive.

Var str= "This is an antzone good"; var reg=/this/i;console.log (str.match (reg))

The above code can be matched successfully because it is case-insensitive.

At this point, the study of "the grammatical structure of the regular expression I modifier" 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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