jwgoedert

license: MIT

jwgoedert

//Pseudoclassical Instantiation Pattern
//only properties are needed inside function body
var Box = function(){
  this.width = w;
  this.depth = d;
  this.height = h;
  this.state = 'open';
//'generator' automatically returns this.
}
//attach methods to prototype

jwgoedert

//Prototypal Instantiation Pattern Version one-using 'prototype'
var Box = function(w, d, h){
//uses Object.create to create attach to the object's prototype
  let boxObj = Object.create(Box.prototype);
//**one could also link a seperate object containing methods like such
 //let boxObj = Object.create(Box.containerMethods);
  //create all properties associated with object 
  boxObj.width = w;
  boxObj.depth = d;
  boxObj.height = h;

jwgoedert

//Functional Shared Instantiation, create methods outside function body and link them inside
var Box = function(w, d, h){
let boxObj = {};
 //properties are assigned within function body
  boxObj.width = w;
  boxObj.depth = d;
  boxObj.height = h;
  boxObj.state = 'open';
  
  //Box methods are 'borrowed' from boxMethods

jwgoedert

//Functional instantiation method, clear and easy to follow but calls new functions each time it is invoked
var Box = function(w, d, h){
let boxObj = {};
  boxObj.width = w;
  boxObj.depth = d;
  boxObj.height = h;
  boxObj.open = 'open'
  //methods associated with new Object and created(defined) inside the function body
  //they refer directly to the properties created above.
  boxObj.openBox = function(){

jwgoedert

/*
Instantiation Patterns are a manner in which to organize methods and properties associated with an object and create 
repeatable versions of this object, or object class.  There are four methods to instatiate a constructor object:
Functional, Functional Shared, Prototypal and Pseudoclassical. 
*/

jwgoedert

/* global $ _ opspark */
$(document).ready(function() {
    $.getJSON('data.json', function (data) {
        // YOUR CODE BELOW HERE //
        
        // uncomment this to inspect all available data; delete when done //
        // console.log(data);
        
        // EXAMPLE: Looping over top rated recordings; replace with your code //
        // let topRated = data.discography.topRated;

jwgoedert

var myArr = [1,2,3,4,5,6,7,8,6,7,8,6];
//last with all the safeties using a for loop
last = function last(arr, number){
   var newArr = [];
    if(!Array.isArray(arr)){
        return [];
    }else if(isNaN(number) || number === undefined ){
        return arr[arr.length - 1];   
    }else if(number < 0){ 
        return newArr;

jwgoedert

//takes any number of objects and creates one unified object.

_.extend1 = (...objects) =>{
    const target = objects[0];
    _.each(objects, (obj, i, objects) =>{
        if(i === 0)return;
        _.each(obj,( val, key, obj)=>{
                target[key] = val;
});
    });

jwgoedert

/*literally does everything... takes a collection, a call-back
function and a starting state(this could be a number, )
*/
_.reduce = function(collection, fn, seed){
    var prevResult = seed;    
    if(seed === undefined) seed = collection[0], prevResult = 1;
    _.each(collection, function(el, i, collection){
        prevResult = fn(prevResult, el, i);
    });
    return prevResult;