What is the best way to loop through a formarray and assign its values to a different array in TypeScript?

Within my form, I have a FormArray with a string parameter called "Foo". In an attempt to access it, I wrote:

let formArray = this.form.get("Foo") as FormArray;
let formArrayValues: {Foo: string}[];  //this data will be incorporated into the TypeScript model for sending.

I am currently struggling with iterating through the FormArray, retrieving the value of "Foo", and storing it in my new array.

for (let c of formArray.controls) {
   formArrayValues.push(c.get("Foo"));
}

Unfortunately, I encountered an error stating that "Foo" is missing in the AbstractControl type. I searched for solutions but couldn't find a similar situation. Any help would be greatly appreciated. Thank you.

Answer №1

Instead of going through the form array in a loop, you can directly access the value of the FormArray with this simple method.

formArrayValues = [...formArray.value];

I recommend checking out the official documentation to gain a deeper understanding of the available functionalities and how to make the most of using form arrays efficiently. This will help prevent unnecessary repetition of code like trying to iterate through the form array control just to obtain its value when it's readily accessible to you.

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