JavaScript RegExp [xyz] Modifier

Definition and Usage

When the [xyz] modifier is set the regular expression finds specific characters or span of characters.
The characters inside the brackets can be any characters or span of characters.

Syntax

new RegExp("[xyz]") OR /[xyz]/

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Example

In the following code we will do a global search for the character span "a" to "h":

var str = "Is this all there is?"; var patt1 = new RegExp("[a-h]","g");

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

Is this all there is?