Trying to find a property recursively in JavaScript

Question

**UPDATE**

/* This is my file in Node: */

var Crawler = require("crawler");
const fs = require('fs');

function iterObj(obj) {
let arr = []
let objValues = Object.values(obj);
// use var to avoid additonal heap overhead of new variable for each iteration
for (var i = 0, len = objValues.length; i < len; i++) {
    if (objValues[i] !== null) {
        if (objValues[i].children || objValues[i].next || objValues[i].prev || objValues[i].parent) {
            delete objValues[i].children;
            delete objValues[i].next;
            delete objValues[i].prev;
            delete objValues[i].parent;
        }
        if (objValues[i].src) { arr.push({ src: objValues[i].src }) }

        console.log("contents of arr on line 29 ", arr);
        if (typeof objValues[i] === "object" && !Array.isArray(objValues[i])) {
            arr.push(...iterObj(objValues[i]));
        }
    }
}
return arr;
}



var c = new Crawler({
maxConnections: 10,
// This will be called for each crawled page
callback: function(error, res, done) {
    if (error) {
        console.log(error);
    } else {
        var $ = res.$;
        // $ is Cheerio by default
        //a lean implementation of core jQuery designed specifically for the server;
        var img = $(`img`);

        console.log('img', img);
        console.log('iterObj(img)', iterObj(img))


        // fs.writeFile('fragrance.js', img, (err) => {
        //     if (err) throw err;
        //     console.log(`img`, img);
        //     console.log(`iterObj(img)`, iterObj(img));


        //     console.log('Data written to file.')
        // })

    }
    done();
}
});


c.queue('https://www.elizabetharden.com/fragrance/')


And this is the data, a javascript object.

img initialize {
  '0':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         '/on/demandware.static/Sites-ElizabethArden-Site/-/default/dwbde506b9/images/ELIZABETH_ARDEN_LOGO_640x90.png',
        alt: 'Elizabeth Arden' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: null,
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'picture',
        attribs: {},
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '1':
   { type: 'tag',
     name: 'img',
     attribs:
      { alt: 'Fragrance Collection',
        src:
         'https://www.elizabetharden.com/on/demandware.static/-/Sites-ElizabethArden-Library/default/dwd973092c/images/category-landing/D_White_Tea_Fragrance_Page_Banner-bg.jpg',
        srcset:
         'https://www.elizabetharden.com/on/demandware.static/-/Sites-ElizabethArden-Library/default/dwd973092c/images/category-landing/D_White_Tea_Fragrance_Page_Banner-bg.jpg, https://www.elizabetharden.com/on/demandware.static/-/Sites-ElizabethArden-Library/default/dw62e6fa40/images/category-landing/D_White_Tea_Fragrance_Page_Banner@2x-bg.jpg 2x' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: null,
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'picture',
        attribs: {},
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '2':
   { type: 'tag',
     name: 'img',
     attribs:
      { alt: 'My Fifth Avenue Fragrance',
        src:
         'https://www.elizabetharden.com/on/demandware.static/-/Sites-ElizabethArden-Library/default/dw255d9a03/images/category-landing/myfifthavenue_1100x1100.jpg',
        srcset:
         'https://www.elizabetharden.com/on/demandware.static/-/Sites-ElizabethArden-Library/default/dw255d9a03/images/category-landing/myfifthavenue_1100x1100.jpg' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: null,
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'picture',
        attribs: {},
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '3':
   { type: 'tag',
     name: 'img',
     attribs:
      { alt: 'Elizabeth Arden Green Tea Perfume',
        src:
         'https://www.elizabetharden.com/on/demandware.static/-/Sites-ElizabethArden-Library/default/dw8c63d4b5/images/category-landing/green-tea_1100x1100.jpg',
        srcset:
         'https://www.elizabetharden.com/on/demandware.static/-/Sites-ElizabethArden-Library/default/dw8c63d4b5/images/category-landing/green-tea_1100x1100.jpg' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: null,
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'picture',
        attribs: {},
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '4':
   { type: 'tag',
     name: 'img',
     attribs:
      { alt: 'Elizabeth Arden White Tea Perfume',
        src:
         'https://www.elizabetharden.com/on/demandware.static/-/Sites-ElizabethArden-Library/default/dw489093d9/images/category-landing/white-tea_1100x1100.jpg',
        srcset:
         'https://www.elizabetharden.com/on/demandware.static/-/Sites-ElizabethArden-Library/default/dw489093d9/images/category-landing/white-tea_1100x1100.jpg' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: null,
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'picture',
        attribs: {},
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '5':
   { type: 'tag',
     name: 'img',
     attribs:
      { alt: 'Skincare Diagnostic',
        src:
         'https://www.elizabetharden.com/on/demandware.static/-/Sites-ElizabethArden-Library/default/dw51ed6763/images/category-landing/red-door_1100x1100.jpg',
        srcset:
         'https://www.elizabetharden.com/on/demandware.static/-/Sites-ElizabethArden-Library/default/dw51ed6763/images/category-landing/red-door_1100x1100.jpg' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: null,
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'picture',
        attribs: {},
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '6':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dwc531e5e7/images/2104_A0115075.jpg?sw=550&sh=550&sm=fit',
        alt: 'My Fifth Avenue Eau de Parfum, , large',
        class: 'desktop-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: [Object],
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: null,
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '7':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dwc531e5e7/images/2104_A0115075.jpg?sw=550&sh=550&sm=fit',
        alt: 'My Fifth Avenue Eau de Parfum, , large',
        class: 'ipad-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: [Object],
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '8':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dwc531e5e7/images/2104_A0115075.jpg?sw=135&sh=136&sm=fit',
        alt: 'My Fifth Avenue Eau de Parfum, , large',
        class: 'iphone-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: null,
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '9':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dwbb9e72e0/images/1003A0106574.jpg?sw=550&sh=550&sm=fit',
        alt: 'Elizabeth Arden White Tea Eau de Toilette Spray, , large',
        class: 'desktop-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: [Object],
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: null,
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '10':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dwbb9e72e0/images/1003A0106574.jpg?sw=550&sh=550&sm=fit',
        alt: 'Elizabeth Arden White Tea Eau de Toilette Spray, , large',
        class: 'ipad-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: [Object],
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '11':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dwbb9e72e0/images/1003A0106574.jpg?sw=135&sh=136&sm=fit',
        alt: 'Elizabeth Arden White Tea Eau de Toilette Spray, , large',
        class: 'iphone-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: null,
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '12':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dw55f80ff7/images/100326800.jpg?sw=550&sh=550&sm=fit',
        alt: 'Green Tea Scent Spray, , large',
        class: 'desktop-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: [Object],
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: null,
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '13':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dw55f80ff7/images/100326800.jpg?sw=550&sh=550&sm=fit',
        alt: 'Green Tea Scent Spray, , large',
        class: 'ipad-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: [Object],
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '14':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dw55f80ff7/images/100326800.jpg?sw=135&sh=136&sm=fit',
        alt: 'Green Tea Scent Spray, , large',
        class: 'iphone-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: null,
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '15':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dw0dcf8cae/images/10034372400.jpg?sw=550&sh=550&sm=fit',
        alt: 'Green Tea Honey Drops Body Cream, , large',
        class: 'desktop-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: [Object],
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: null,
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '16':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dw0dcf8cae/images/10034372400.jpg?sw=550&sh=550&sm=fit',
        alt: 'Green Tea Honey Drops Body Cream, , large',
        class: 'ipad-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: [Object],
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '17':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dw0dcf8cae/images/10034372400.jpg?sw=135&sh=136&sm=fit',
        alt: 'Green Tea Honey Drops Body Cream, , large',
        class: 'iphone-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: null,
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '18':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dwc687b1bb/images/2104-A0119537-Red-Door-Fragrance-3.3oz-4-Piece-Set.jpg?sw=550&sh=550&sm=fit',
        alt: 'Red Door 3.3oz Eau De Toilette 4-Piece Set, , large',
        class: 'desktop-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: [Object],
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: null,
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '19':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dwc687b1bb/images/2104-A0119537-Red-Door-Fragrance-3.3oz-4-Piece-Set.jpg?sw=550&sh=550&sm=fit',
        alt: 'Red Door 3.3oz Eau De Toilette 4-Piece Set, , large',
        class: 'ipad-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: [Object],
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '20':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dwc687b1bb/images/2104-A0119537-Red-Door-Fragrance-3.3oz-4-Piece-Set.jpg?sw=135&sh=136&sm=fit',
        alt: 'Red Door 3.3oz Eau De Toilette 4-Piece Set, , large',
        class: 'iphone-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: null,
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '21':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dw86b39b0f/images/2104_Pomegranate.jpg?sw=550&sh=550&sm=fit',
        alt: 'Green Tea Pomegranate  Eau De Toilette Spray, , large',
        class: 'desktop-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: [Object],
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: null,
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '22':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dw86b39b0f/images/2104_Pomegranate.jpg?sw=550&sh=550&sm=fit',
        alt: 'Green Tea Pomegranate  Eau De Toilette Spray, , large',
        class: 'ipad-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: [Object],
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  '23':
   { type: 'tag',
     name: 'img',
     attribs:
      { src:
         'https://www.elizabetharden.com/dw/image/v2/AAHP_PRD/on/demandware.static/-/Sites-elizabetharden-master-catalog/default/dw86b39b0f/images/2104_Pomegranate.jpg?sw=135&sh=136&sm=fit',
        alt: 'Green Tea Pomegranate  Eau De Toilette Spray, , large',
        class: 'iphone-only' },
     children: [],
     next:
      { data: '\n',
        type: 'text',
        next: null,
        prev: [Circular],
        parent: [Object] },
     prev:
      { data: '\n',
        type: 'text',
        next: [Circular],
        prev: [Object],
        parent: [Object] },
     parent:
      { type: 'tag',
        name: 'a',
        attribs: [Object],
        children: [Array],
        next: [Object],
        prev: [Object],
        parent: [Object] } },
  options:
   { normalizeWhitespace: false,
     xmlMode: false,
     decodeEntities: true,
     withDomLvl1: true },
  _root:
   initialize {
     '0':
      { type: 'root',
        name: 'root',
        attribs: {},
        children: [Array],
        next: null,
        prev: null,
        parent: null },
     options:
      { normalizeWhitespace: false,
        xmlMode: false,
        decodeEntities: true,
        withDomLvl1: true },
     length: 1,
     _root: [Circular] },
  length: 24,
  prevObject:
   initialize {
     '0':
      { type: 'root',
        name: 'root',
        attribs: {},
        children: [Array],
        next: null,
        prev: null,
        parent: null },
     options:
      { normalizeWhitespace: false,
        xmlMode: false,
        decodeEntities: true,
        withDomLvl1: true },
     length: 1,
     _root: [Circular] } }

var initialize = {
      '0': {   
         type: 'tag',
         name: 'img',
         attribs: { 
            src: 'path/to/file.png',
            alt: 'SEO is good' 
         },
       },
      '1': { 
         type: 'tag',
         name: 'img',
         attribs: { 
             src: 'path/to/another/image.jpg',
            alt: 'SEO is GREAT' 

         }
       }

I have an object and want to traverse recursively until I get to my property and value I wish.

Isn't this how you would do it ?

function iterObj(obj) {
  var arr = []
  arr.push(obj)
  return arr.map(obj => {
    var newObj = {}
    if (obj !== null && typeof obj === "object") {
      iterObj(obj);
    }
    newObj[obj.src] = obj.src;
    return newObj;
  })
}

So shouldn't iterObj(initialize) yield:

[{src: 'path/to/file.png'}, {src: 'path/to/another/image.jpg'}]

UPDATE:

Might help to include the context where I am using this:

Below is a scraper module I am using in node.

var Crawler = require("crawler");
const fs = require('fs');
   
function IsJsonString(str) {
    try {
        JSON.parse(str);
    } catch (e) {
        return false;
    }
    return true;
}

function iterObj(obj) {
    var arr = []
    var isNotNull = (value) => typeof value !== "object" && value !== null

    for (var value of Object.values(obj)) {
        console.log("value line 18", value);

        if (value !== null) {
            if (value.src) { arr.push({ src: value.src }) }
            if (typeof value === "object" && !Array.isArray(value)) {
                console.log("value line 23", value);

                arr.push(...iterObj(value));
            }
        }
    }
    return arr;
}



var c = new Crawler({
    maxConnections: 10,
    // This will be called for each crawled page
    callback: function(error, res, done) {
        if (error) {
            console.log(error);
        } else {
            var $ = res.$;
            // $ is Cheerio by default
            //a lean implementation of core jQuery designed specifically for the server;
            var img = $(`img`);
            fs.writeFile('fragrance.js', img, (err) => {
                if (err) throw err;
                console.log(`img`, img);
                console.log(`iterObj(obj) ${iterObj(img)}`)
                    // console.log(`IsJsonString(img)`, IsJsonString(img[0]));


                console.log('Data written to file.')
            })

        }
        done();
    }
});

c.queue('https://www.somesite.com/someendpoint/')

Answer 1

In order to check each property of the object, you will need to get a list of the object's properties and/or their respective values, either using Object.keys(), Object.values() or Object.entries(). From there, you will need to check if each value meets the following criteria:

1) If it has a src property, push that property and continue on

2) If it is an object, and not null, recurse over the object to check if it, or its children have a src property

Then you concatenate the results of the recursive calls to your original array and return the final results. This is one of the key pieces you were missing. You were making the recursive calls, but not doing anything with them.

The reason you can't use .map like you were, is because you're not returning a src from an object 1-to-1. An object could contain any number of child src properties, or it could contain 0. You'll need to manually build your results list instead.

Here's a working example of what you're trying to do:

var initialize = {
  '0': {   
      type: 'tag',
      name: 'img',
      attribs: { 
        src: 'path/to/file.png',
        alt: 'SEO is good',
        self: null,
        parent: null,
        top: null
      },
      next: {
        prev: null
      },
      prev: {
        next: null
      }
    },
  '1': { 
      type: 'tag',
      name: 'img',
      attribs: { 
          src: 'path/to/another/image.jpg',
        alt: 'SEO is GREAT' 

      }
    }
}

// add circular references for testing
initialize[0].attribs.self = initialize[0].attribs;
initialize[0].attribs.parent = initialize[0];
initialize[0].attribs.top = initialize;
initialize[0].next.prev = initialize[0].prev;
initialize[0].prev.next = initialize[0].next;

function iterObj(nestedObj) {
  // keep a list of object references to prevent circular references at any level
  let objReferences = [];
  function rHelper(obj) {
    let arr = []
    let objValues = Object.values(obj);
    // use var to avoid additonal heap overhead of new variable for each iteration
    for (var i = 0; i < objValues.length; i++) {
      let val = objValues[i];
      // check if non null and not a reference we've already seen before (AKA circular reference)
      if (val !== null && objReferences.indexOf(val) === -1) {
        if (val.src) { arr.push({ src: val.src }) }
        if (typeof val === "object" && !Array.isArray(val)) {
          // since we're checking this object, add reference to list to make sure it doesn't get
          // referenced by any of its children or siblings
          objReferences.push(val);
          arr.push(...rHelper(val));
        }
      }
    }
    return arr;
  }

  return rHelper(nestedObj);
}

console.log(iterObj(initialize));