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JavaScript RegExp gi Modifier

RegExp Object Reference Complete RegExp Object Reference

Definition and Usage

The gi modifier is used to do a case insensitive search of all occurrences of a regular expression in a string.

Syntax

new RegExp("regexp","gi")
OR
/regexp/gi

Parameter Description
regexp Required. The rest of the regular expression to use

Tips and Notes

Note: When using the Regular Expression object and the g modifier is set, the lastIndex property is set when executing a search. The lastIndex property specifies the index (placement) in the string where to start the next match.

Example

In the following code we will do a global, case insensitive search for "is":

var str = "Is this all there is?";
var patt1 = new RegExp("is","gi");

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

Is this all there is?

Try-It-Yourself Demos

gi
How to use the "gi" modifier to do a case insensitive search for all the occurrences of the regular expression in a string using a string object.

gi
How to use the "gi" modifier to do a case insensitive search for all the occurrences of the regular expression in a string using a regular expression object.

RegExp Object Reference Complete RegExp Object Reference

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