JavaScript RegExp {x} Modifier

Definition and Usage

When the {x} modifier is set the regular expression finds a specific number of the regular expression grouped together.
The characters inside the brackets must be a number.

Syntax

/regexp{x}/

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

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Example

In the following code we will do a search for any substring with four digits:

var str = "100 or 1000?"; var patt1 = /\d{4}/;

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

100 or 1000?