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How to Use the ignoreCase attribute in a JavaScript Regular Expression

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Author: User
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How to Use the ignoreCase attribute in a JavaScript Regular Expression

This article describes how to use the ignoreCase attribute in JavaScript Regular Expressions. It is an important knowledge point in JS learning. For more information, see

IgnoreCase is a read-only Boolean attribute of a regular expression object. It specifies whether a specific regular expression is used to perform case-insensitive matching ., It is created with the "I" attribute.

Syntax

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RegExpObject. ignoreCase

The following is the detailed information about the parameters:

  • NA

Return Value:

  • If "I" is set, "TRUE" is returned; otherwise, "FALSE" is returned ".

Example:

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<Html>

<Head>

<Title> JavaScript RegExp ignoreCase Property </title>

</Head>

<Body>

<Script type = "text/javascript">

Var re = new RegExp ("string ");

 

If (re. ignoreCase ){

Document. write ("Test1-ignoreCase property is set ");

} Else {

Document. write ("Test1-ignoreCase property is not set ");

}

Re = new RegExp ("string", "I ");

 

If (re. ignoreCase ){

Document. write ("<br/> Test2-ignoreCase property is set ");

} Else {

Document. write ("<br/> Test2-ignoreCase property is not set ");

}

</Script>

</Body>

</Html>

This produces the following results:

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Test1-ignoreCase property is not set

Test2-ignoreCase property is set

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