remove specific index item in js code example

Example 1: js remove from array by value

const index = array.indexOf(item);
if (index !== -1) array.splice(index, 1);

Example 2: js array delete specific element

var arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0];
var removed = arr.splice(2,2);
/*
removed === [3, 4]
arr === [1, 2, 5, 6, 7, 8, 9, 0]
*/