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 — Patrick Roberts
– Patrick Roberts, Commented Jul 2, 2017 at 6:19
@user3679330 Any specific reason you have removed my answer as accepted answer? — Hassan Imam
– Hassan Imam, Commented Jul 2, 2017 at 6:31
I tried to make them all the accepted answer, as they all did what I wanted — user3679330
– user3679330, Commented Jul 2, 2017 at 6:54
@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
– Dinesh undefined, Commented Jul 2, 2017 at 6:56
You can have the accepted answer then, i feel like you wanted it more — user3679330
– user3679330, Commented Jul 2, 2017 at 6:58

Dinesh undefined · Accepted Answer · 2017-07-02 05:53:32Z

1

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);
   }

answered Jul 2, 2017 at 5:53

Dinesh undefined

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Comments

Hassan Imam · Accepted Answer · 2017-07-02 06:24:07Z

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 · Accepted Answer · 2017-07-02 06:34:33Z

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 2, 2017 at 6:34

answered Jul 2, 2017 at 6:12

Lena Kaplan

7564 silver badges13 bronze badges

2 Comments

user3679330 Over a year ago

how would you write this without the => ?

Lena Kaplan Over a year ago

just use regular function, lodash.map(myArray.applications, function(item) {return item.categories});

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