To remove array element by value with JavaScript. we use the indexOf and splice methods.
For instance, we write
const arr = ["orange", "red", "black", "white"];
const index = arr.indexOf("red");
if (index >= 0) {
arr.splice(index, 1);
}
to call arr.indexOf to get the index of the first instance of 'red' in arr.
Then we check if index is bigger than 0 to check if it’s found.
If it is, then we call splice with index and 1 to return the item in arr at index.
