Questions tagged [angular-validation]

Discover the power of Angular 2+ validation techniques encompassing a wide range of patterns, syntax, and properties. Explore the extensive capabilities of Angular 2+ validation directives to effectively validate forms, controls, and models with ease.

Tips for enforcing validation rules at the class level using Angular's version of jQuery Validate

After utilizing jQuery Validate's convenient addClassRules function to impose a rule on all elements of a specific class, rather than relying on the attributes of their name, I encountered a roadblock when trying to do the same with the Angular wrappe ...

javascriptjqueryangularjsjquery-validateangular-validation

Disabling the Parent Component Form Submit button until the child component fields are deemed valid

I'm currently utilizing a Template Driven Form. HTML of the Parent Component <form #BasicForm="ngForm" (ngSubmit)="onBasicDetailsSubmit()" id="BasicForm"> <app-input-text [(sharedVar)]="dashboardDetails.Text1" [isMandatory]="true" ></ap ...

angularangular2-formsangular6angular4-formsangular-validation

Prevent HTTP using AsyncValidator when the value is empty

I have developed a custom AsyncValidator to verify the uniqueness of a userName. Inspired by this tutorial, I have implemented a delay of 500ms. However, I am facing a challenge in preventing the HTTP service call if the input value does not meet a speci ...

angulartypescriptangular2-formsangular2-observablesangular-validation

Enforce a mandatory selection in a group of checkboxes depending on the input value in a

I have a new challenge with a form that includes a group of checkboxes and a textbox. I need to make the checkboxes mandatory based on the value entered in the textbox. I am looking for a way to declare the checkbox group similar to how I did it in the p ...

angularangular-validation

Tips for successfully implementing Angular.js validation within the confines of a <form> element

Having trouble getting my code to work when I place my app inside the <form name="myForm"> tag. Any suggestions on how to make it function properly? (It works when I place myForm inside ng-app, but my app needs to be within the <form> tag) < ...

javascriptangularjsvalidationangular-validation

Discovering the ins and outs of utilizing Validator.pattern in Angular 9

BGroup = new FormGroup({ test: new FormControl(null, [Validators.required, Validators.pattern("[0-9]*$")]) }); Greetings! I am currently using Angular 9 and I have a question. How can I define a pattern that only accepts decimal numbers? Speci ...

angularangular-validation

Require that the parent FormGroup is marked as invalid unless all nested FormGroups are deemed valid - Implementing a custom

Currently, I am working on an Angular 7 project that involves dynamically generating forms. The structure consists of a parent FormGroup with nested FormGroups of different types. My goal is to have the parentForm marked as invalid until all of the nested ...

angulartypescriptangular7angular-validation

Using Angular 8, you can create a reactive form that includes a custom ng-select component which has

My custom angular reactive form includes a ng-select component along with other elements. I have implemented the following code to validate the form: private validateCustForm() { this.validation.touchFormControls(this.appointmentForm); if (this.ap ...

angularangular8angular-validationangular-ngselect

What is the preferred method for validating an Angular form - ng-model or form input name?

When it comes to validating an input field and providing feedback, there are two methods that I have noticed: <form name="myform" ng-submit="myform && myFunc()"> <input name="foo" ng-model="foo" ...

angularangular-validation

Discover the effective method in Angular to display a solitary password validation message while dealing with numerous ones

Here is the pattern we use to validate input fields: The length of the input field should be between 6 and 15 characters. It should contain at least one lowercase letter (a-z). It should contain at least one uppercase letter (A-Z). It should contain at le ...

javascriptangularvalidationpasswordsangular-validation