how to remove from a list by element javascript code example

Example 1: delete item from list javascript

const array = [1, 2, 3];
const index = array.indexOf(2);
if (index > -1) {
  array.splice(index, 1);
}

Example 2: java script removing first three indexes

var indexToRemove = 0;
var numberToRemove = 1;

arr.splice(indexToRemove, numberToRemove);