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PatternValidator

directive

A directive that adds regex pattern validation to controls marked with the pattern attribute. The regex must match the entire control value. The directive is provided with the NG_VALIDATORS multi-provider list.

See also

NgModules

Selectors

Properties

Property Description
@Input()pattern: string | RegExp

Tracks changes to the pattern bound to this directive.

Description

Adding a pattern validator

The following example shows how to add a pattern validator to an input attached to an ngModel binding.

<input name="firstName" ngModel pattern="[a-zA-Z ]*">

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Licensed under the Creative Commons Attribution License 4.0.
https://angular.io/api/forms/PatternValidator