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Angular formarray remove all

const arr = new FormArray([
   new FormControl(),
   new FormControl()
]);
console.log(arr.length);  // 2

arr.clear();
console.log(arr.length);  // 0

Source: stackoverflow.com

How to remove all element from formarray

formArray.clear();

Formarray set value at index

((this.form.get('controls') as FormArray).at(index) as FormGroup).get('description').patchValue(item.description);

Source: stackoverflow.com

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