Nodejs Array Multiply mutilate(start, end)

Method Source Code

var arr = ["Devin Hardy", "Seth Rollins", "Cole Sprouse"];


Array.prototype.mutilate = function(start, end) {
   var newArr = [];

   if (end > this.length || start > this.length) {
      throw new Error("Invalid opperation.");
   } else {/*from  ww  w.  j  a  va 2s  .c  o  m*/

      arr2 = this.slice(start, end);
      newArr.push(arr2);
   }

   return newArr;

};

Related

1. multiply(n)

   Array.prototype.multiply = function(n){
     results = []
     for (var i = 0; i < this.length; i++){
       for (var j = 0; j < n; j++){
         results.push(this[i])
     return results
   

2. multiplyByTwo()

   Array.prototype.multiplyByTwo = function() {
     var newArr = [];
     for (var i = 0; i < this.length; i++) {
       newArr.push(this[i] * 2)
     return newArr;
   };
   console.log([1, 2, 3].multiplyByTwo());
   Array.prototype.myEach = function(func) {
   ...
   

3. multislice(ranges)

   Array.prototype.multislice = function(ranges) {
     if(typeof ranges === 'undefined')
       throw Exception("Ranges have to be defined!");
     if(typeof ranges !== 'object') 
       throw Exception("You have to pass an array!");
     return ranges.map(el => this.slice(el.from, el.to));
   };
   

4. multislice(ranges)

   'use strict';
   var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { 
     return typeof obj; 
     } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };
   Array.prototype.multislice = function (ranges) {
     var _this = this;
     if (typeof ranges === 'undefined') throw Exception("Ranges have to be defined!");
     if ((typeof ranges === 'undefined' ? 'undefined' : _typeof(ranges)) !== 'object') throw Exception("You have to pass an array!");
     return ranges.map(function (el) {
   ...
   

5. multisplice()

   Array.prototype.multisplice = function(){
     var args = arguments[0], 
       res = [];
     args.sort( function(a, b){
        return a - b;
      });
     for(var i = 0; i < args.length; i++){
       var index = args[i] - i;
       res.push( this.splice(index, 1)[0] );
   ...