Using FormArray you can create building blocks of forms with FormControl in Angular.
Example of form array. To post an array from an HTML form to PHP we simply append a pair of square brackets to the end of the name attribute of the input field. Usually you meet these strange creatures array-like objects as arguments special keyword inside of a function or when working with DOM collections. Int a array 1.
It will return 2. By voting up you can indicate which examples are most useful and appropriate. For example if one of the controls in a FormArray is invalid the entire array becomes invalid.
Transform array-like into an array. Suppose you declared an array mark as above. In this example mark0 is the first element.
A FormArray aggregates the values of each child FormControl into an array. Power. Following is the code snippet of accessing array elements by using particular index numbers.
C Accessing an Array Elements. Transform an array-like object into an array. This is the total length of the array.
Adds a new control to the end of the array. Thats nice but unless youre dealing with a value accessor that knows how to work with a plain array its probably useless. With FormArray you can add new form fields or a set of form fields declaratively.