ngModelis a directive that allows your input to participate in a form (but works also without a form)valueis a property you can bind a value to with[value]="name"while(valueChange)="..."doesn’t work, because the<input>element doesn’t have an@Output() valueChange;therefore[(value)]="..."is invalid.
[(ngModel)]="name" is the shorthand for [ngModel]="name" (ngModelChange)="name = $event" as is [(value)]="name" for [value]="name" (valueChange)="name = $event"