sorting array of objects in node.js

Question

exports.getFbFriendsFromFbIdAndFbAccessTokenTest=function(id,token){

    var request = require('request');
    var urls = "https://graph.facebook.com/" + id + "/friends?access_token=" + token;

    request(urls, function(error, response, body) {
        if (!error && response.statusCode == 200) {
            var output = JSON.parse(body);          
            output.sort(function(a,b){
                if (a.name > b.name)
                  return 1;
                if (a.name < b.name)
                  return -1;
                  // a must be equal to b
                return 0;
             });                

            console.log(output);            
        }           
    });

}

I want to sort the facebook friend's list in ascending order. Currently i am getting the following result in console:

`{ data: `

[ { name: 'xxx', id: '547dsad1' }, { name: 'xxx', id: '55324iii' }, { name: 'xxx', id: '55yyy' }, ........ ........

But it gives error that object output has no property sort. I have also used Array.prototype:

Array.prototype.sortByProp = function(p){
return this.sort(function(a,b){
return (a[p] > b[p]) ? 1 : (a[p] < b[p]) ? -1 : 0;
});
}

output.sortByProp('name');

But then it shows the same error that object output has not property sortByProp. Is there any other way to solve this problem?

are you sure output is 100% an array and not an object Array.isArray(obj) — dark_ruby
– dark_ruby, Commented Jan 30, 2014 at 11:51
Have you tried logging output = JSON.parse(body) to console to see what you're actually working with? It looks like the variable you're trying to "sort" isn't an array. (edit: looks like dark_ruby beat me to it) — user909694
– user909694, Commented Jan 30, 2014 at 11:57

dark_ruby · Accepted Answer · 2014-01-30 12:08:12Z

3

output is an object, output.data is an array

Array.prototype.sortByProp = function(p){
  return this.sort(function(a,b){
    return (a[p] > b[p]) ? 1 : (a[p] < b[p]) ? -1 : 0;
  });
};

console.log(output.data.sortByProp('name'));

edited Jan 30, 2014 at 12:08

answered Jan 30, 2014 at 11:52

dark_ruby

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8 Comments

TeamA1 Over a year ago

Its not giving any result in the console.

dark_ruby Over a year ago

it will not, to get result into console you need to console.log it, I updated my answer

TeamA1 Over a year ago

TypeError: Object [object Object],[object Object].....[object Object],[object Object],[object Object],[object Object] has no method 'sortByProp'

dark_ruby Over a year ago

can you run Array.isArray on an object you are trying to run sortByPropon, just to make sure it is an array?

TeamA1 Over a year ago

It is returning false.

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