javascript pop out one index code example

Example 1: get index from element in list python

list.index(element)

Example 2: how to get the last element in javascript

const nums = [1, 2, 3, 4, 5, 6, 7];
const lastOne = nums[nums.lenght - 1]; // last element of array

Example 3: array index javascript show only first 2 elements

array.slice(0, n);