JavaScript RegExp ignoreCase

let pattern = /W3S/i;
let result = pattern.ignoreCase;

Description

The ignoreCase property specifies whether or not the "i" modifier is set.

This property returns true if the "i" modifier is set, otherwise it returns false.

ignoreCase is an ECMAScript1 (ES1) feature.

ES1 (JavaScript 1997) is fully supported in all browsers:


Chrome	Edge	Firefox	Safari	Opera	IE
Yes	Yes	Yes	Yes	Yes	Yes

RegExpObject.ignoreCase

Type	Description
Boolean	Returns true if the "i" modifier is set, false otherwise