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Other Objects

CSSStyleDeclaration

JavaScript RegExp i Modifier

< JavaScript RegExp Object

Example

Do a case-insensitive search for "w3ii" in a string:

var str = "Visit w3ii";
var patt1 = /w3ii/i;

The marked text below shows where the expression gets a match:

Visit w3ii

Try it Yourself »

Definition and Usage

The i modifier is used to perform case-insensitive matching.

Tip: Use the ignoreCase property to check whether or not the "i" modifier is set.

Browser Support

Expression
i	Yes	Yes	Yes	Yes	Yes

Syntax

new RegExp("regexp","i")

or simply:

/regexp/i

< JavaScript RegExp Object