PatternValidator
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
[pattern][formControlName][pattern][formControl][pattern][ngModel]
Properties
| Property | Description |
|---|---|
@Input()
|
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 ]*">
Methods
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A lifecycle method called when the directive's inputs change. For internal use only. |
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Parameters
Returns
|
|
Method that validates whether the value matches the the pattern requirement. |
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Parameters
Returns
|
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Registers a callback function to call when the validator inputs change. |