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In JavaScript, arrays are just another kind of object. Like with objects, you should treat arrays in React state as read-only. This means that you shouldn’t reassign items inside an array like arr[0] = 'bird', and you also shouldn’t use methods that mutate the array, such as push() and pop().

Adding to an array

• Instead, create a new array which contains the existing items and a new item at the end. There are multiple ways to do this, but the easiest one is to use the ... array spread syntax:
• Instead, create a new array which contains the existing items and a new item at the end. There are multiple ways to do this, but the easiest one is to use the ... array spread syntax:

Instead, create a new array which contains the existing items and a new item at the end.

• inserisci testo elemento lista
• inserisci testo elemento lista
• inserisci testo elemento lista