p.location-badge. exported from angular2/forms defined in angular2/src/forms/model.ts (line 249) :markdown Defines a part of a form, of variable length, that can contain other controls. A `ControlArray` aggregates the values and errors of each Control in the group. Thus, if one of the controls in a group is invalid, the entire group is invalid. Similarly, if a control changes its value, the entire group changes as well. `ControlArray` is one of the three fundamental building blocks used to define forms in Angular, along with Control and ControlGroup. ControlGroup can also contain other controls, but is of fixed length. .l-main-section h2 Members .l-sub-section h3 constructor pre.prettyprint code. constructor(controls: List<AbstractControl>, validator?: Function) :markdown .l-sub-section h3 controls :markdown .l-sub-section h3 at pre.prettyprint code. at(index: number) :markdown .l-sub-section h3 push pre.prettyprint code. push(control: AbstractControl) :markdown .l-sub-section h3 insert pre.prettyprint code. insert(index: number, control: AbstractControl) :markdown .l-sub-section h3 removeAt pre.prettyprint code. removeAt(index: number) :markdown .l-sub-section h3 length :markdown