First off, let's have a little reminder of how we can create a form programmatically. We used to use the dictionary variable and pass that to the FormGroup constructor, but we may as well skip that variable and define the dictionary inline, as in the following code:

const form = new FormGroup({
  name: new FormControl(''),
  surname: new FormControl(''),
  age: new FormControl 
})

To change any of the values in the form, we can use one of two approaches:

• setValue(), which will replace all values
• patchValue(), which will only update the mentioned controls