WebApr 6, 2024 · Günter Zöchbauer's answer is still correct in Angular 6, but there is a workaround that works well for me.. My workaround depend on two observations: First, you can see which validations are presently failing, by looking the keys on the errors object. So if you have Validators.required and Validators.minLength specified, the errors object would … WebMar 2, 2024 · 1. If the value this.forbiddenName is falsy ( false, null, undefined, 0, false ), then it will return null, otherwise it will call the function forbiddenNameValidator with the given regex. The i in the parameter for RegExp is for making the regex case-insensitive. …
Angular
WebSep 7, 2024 · export function forbiddenNameValidator (nameRe: RegExp): ValidatorFn { return (control: AbstractControl): { [key: string]: any} null => { const forbidden = nameRe.test (control.value); return forbidden ? {'forbiddenName': {value: control.value}} : null; }; } What does this line of code do/mean? Is this TypeScript's way of defining a … how to disinfect a room from covid 19
Form Validation - ts - COOKBOOK - Angular
WebAug 1, 2024 · Currently, I'm working on an assignment of reactive-forms by Maximilian Schwarzmüller Angular 4 tutorial. In the assignment, I had to create a reactive form, and I did. Then I had to create a custom async validator, that checks the value of the control. It shouldn't be equal to 'Test'. This is my typescript code: WebCannot retrieve contributors at this time. import { AbstractControl, NG_VALIDATORS, ValidationErrors, Validator, ValidatorFn } from '@angular/forms'; return forbidden ? … WebMay 11, 2024 · I've been looking all over trying to get custom validation to work in angular 11. So far I have been unable to get it to work as expected. If I use the direct method from Angular.io (Below) then the param (called 'control') is undefined. the mutual interest rates