I would like to validate url in angular 5 not working.
<input type="url" name="url" id="url" ngModel pattern="https?://.+">
<div *ngIf="url.errors && (url.dirty || url.touched)" class="alert alert-danger">
<div [hidden]="!url.errors.pattern">
</div>
</div>
To Validate the URL / Web address in a reactive form you can follow the below method, using Validators.pattern against the form control.
const urlRegex = '(https?://)?([\\da-z.-]+)\\.([a-z.]{2,6})[/\\w .-]*/?';
this.hospitalForm = this.fb.group({
Website: ['', Validators.pattern(urlRegex)],
});
To validate the URL / Web Address in a template driven form, you should create a custom Validator directive as follows
@Directive({
selector: '[appPattern]',
providers: [{provide: NG_VALIDATORS, useExisting: PatternValidatorDirective, multi: true}]
})
export class PatternValidatorDirective implements Validator {
@Input('appPattern') pattern: string;
validate(control: AbstractControl): {[key: string]: any} | null {
return this.pattern ? this.patternValidator(new RegExp(this.pattern, 'i'))(control)
: null;
}
patternValidator(nameRe: RegExp): ValidatorFn {
return (control: AbstractControl): {[key: string]: any} | null => {
const regextest = nameRe.test(control.value);
return (!regextest) ? {'apppattern': {value: control.value}} : null;
};
}
}
In your input, you should use appUrl with the regex, :
<input type="url" name="url" id="url" ngModel appPattern="(https?://)?([\\da-z.-]+)\\.([a-z.]{2,6})[/\\w .-]*/?">
