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並前往https://thinkster.io/tutorials/intro-to-reactive-forms-in-angular-make-forms-dynamic/demo-formarray-with-formcontrols-component

Demo: FormArray with FormControls in the Component

Add a new method to be able to add to the phoneNumbers FormArray. addPhoneNumber() { this.phoneNumbers.push(this.fb.control(''); }; Optionally, you can refactor ...

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