If I use `const` to declare an array can I still add/update the elements in the array?

Frequently Asked Questions JavaScript FAQ
1

Question

If I use const to declare an array can I still add/update the elements in the array?

Answer

Yes you can. Since you’re only modifying the array and not redefining it you are allowed to modify its contents by adding/removing/updating the elements in the array. Remember, while you can modify the array you cannot redefine it. Example:

    	// This works
    	const testArray = [1, 2];
    	testArray[2] = 3;
    	// This gives an error
    	testArray = [4, 5, 6];