How to access Object in Array NODE JS

Question

I have the following JSON data which comes from scraping the technology on a page, I have made a Json array called MyArray that is below:

{ url: 'http://www.ozautoelectrics.com',
originalUrl: 'http://www.ozautoelectrics.com',
applications:
[ { name: 'Font Awesome',
   confidence: '100',
   version: '',
   icon: 'Font Awesome.png',
   website: 'http://fontawesome.io',
   categories: [Object] },
 { name: 'Google Analytics',
   confidence: '100',
   version: '',
   icon: 'Google Analytics.svg',
   website: 'http://google.com/analytics',
   categories: [Object] },
 { name: 'jQuery',
   confidence: '100',
   version: '2.1.3',
   icon: 'jQuery.svg',
   website: 'http://jquery.com',
   categories: [Object] } ] }

My question is how do I access the [Object] within categories using NODE? or any of the other things inside applications?

I can use myArray.url to get the URL but how do I get whats inside applications properly? I tried myArray.applications.name

Also i'm new.

Possible duplicate of [Access / process (nested) objects, arrays or JSON](https://stackoverflow.com/questions/11922383/access-process-nested-objects-arrays-or-json) — Patrick Roberts, Jul 02 '17 at 06:19
@user3679330 Any specific reason you have removed my answer as accepted answer? — Hassan Imam, Jul 02 '17 at 06:31
I tried to make them all the accepted answer, as they all did what I wanted — user3679330, Jul 02 '17 at 06:54
@user3679330 No you can't accept all the answers. you can accept only one that solved you problem. If you accept other answers means it will revert of already accepted answer. — Dinesh undefined, Jul 02 '17 at 06:56
You can have the accepted answer then, i feel like you wanted it more — user3679330, Jul 02 '17 at 06:58

score 1 · Accepted Answer · answered Jul 02 '17 at 05:53

Loop through applications and use index to access categories.

var myArray = { url: 'http://www.ozautoelectrics.com',
originalUrl: 'http://www.ozautoelectrics.com',
applications:
[ { name: 'Font Awesome',
   confidence: '100',
   version: '',
   icon: 'Font Awesome.png',
   website: 'http://fontawesome.io',
   categories: [Object] },
 { name: 'Google Analytics',
   confidence: '100',
   version: '',
   icon: 'Google Analytics.svg',
   website: 'http://google.com/analytics',
   categories: [Object] },
 { name: 'jQuery',
   confidence: '100',
   version: '2.1.3',
   icon: 'jQuery.svg',
   website: 'http://jquery.com',
   categories: [Object] } ] 
   };
   
   for(var i =0; i<myArray.applications.length;i++){
    console.log(myArray.applications[i].categories);
   }

Hassan Imam · Answer 2 · 2017-07-02T06:24:07.527

You can use forEach method to access each element of array.

var myArray = { 
url: 'http://www.ozautoelectrics.com',
originalUrl: 'http://www.ozautoelectrics.com',
applications: [ { name: 'Font Awesome',
   confidence: '100',
   version: '',
   icon: 'Font Awesome.png',
   website: 'http://fontawesome.io',
   categories: [Object] },
 { name: 'Google Analytics',
   confidence: '100',
   version: '',
   icon: 'Google Analytics.svg',
   website: 'http://google.com/analytics',
   categories: [Object] },
 { name: 'jQuery',
   confidence: '100',
   version: '2.1.3',
   icon: 'jQuery.svg',
   website: 'http://jquery.com',
   categories: [Object] } 
   ]};
   
myArray.applications.forEach(function(value, index, array){
  console.log(value.categories); //Allow to access the array
  //console.log(value.categories[0]); //Allows the first element in the array
});


console.log('Arrow function Solution');
//solution with arrow function
myArray.applications.forEach((value, index, array) => {
  console.log(value.categories); //Allow to access the array
  //console.log(value.categories[0]); //Allows the first element in the array
});

Lena Kaplan · Answer 3 · 2017-07-02T06:34:33.803

1

You can use lodash map function for that. https://lodash.com/docs/4.17.4#map

var lodash = require('lodash');
var categoriesArr = lodash.map(myArray.applications, (item) => item.categories);

edited Jul 02 '17 at 06:34

answered Jul 02 '17 at 06:12

Lena Kaplan

756
4
13

how would you write this without the => ? – user3679330 Jul 02 '17 at 06:55
just use regular function, lodash.map(myArray.applications, function(item) {return item.categories}); – Lena Kaplan Jul 02 '17 at 07:25

How to access Object in Array NODE JS

3 Answers3