javascript deletes last item instead of item at index code example

Example 1: javascript remove last element from array

var colors = ["red","blue","green"];
colors.pop();

Example 2: remove last element from array javascript

// Method - 1
var arr = [1, 2, 3, 4, 5];

var last = arr.pop();
console.log(arr);
/*
    Output: [ 1, 2, 3, 4 ]
*/

// Method - 2
var arr = [1, 2, 3, 4, 5];

arr.splice(arr.length - 1);
console.log(arr);
/*
    Output: [ 1, 2, 3, 4 ]
*/

// Method - 3
var _ = require("lodash");

var arr = [1, 2, 3, 4, 5];
arr = _.initial(arr);
console.log(arr);
/*
    Output: [ 1, 2, 3, 4 ]
*/

// Method - 4
var _ = require("underscore");

var arr = [1, 2, 3, 4, 5];
var n = 3;

arr = _.initial(arr, n);
console.log(arr);
/*
    Output: [ 1, 2 ]
*/