A guide on conditionally displaying content In Angular 2+ versions using [hidden] attribute and *ngIf attribute
Category: Angular 9
Fix Angular Can’t bind to ‘ngModel’ since it isn’t a known property of ‘input’
Angular Conditional Classes error.There are several ways to conditionally add or change classes in Angular 2+ versions.
If you tried to update Angular version, It may cause a lot of dependency issues. This fix may help you.