CODEWITHSUNDEEP
jsonangularjslodash
Nisar
Nisar

Reputation: 6038

Get Unique object of JSON

I have this kind of array:

var foo = [ { "a" : "1" }, { "b" : "2" }, { "a" : "1" } ];

I'd like to filter it to have:

var bar = [ { "a" : "1" }, { "b" : "2" }];

This is my plunker

At line 7 in plunker when i write return JSON.stringify( x ); it is good but returning string JSON.. But when i write return x; it becomes bad and does not return Unique JSON.

Upvotes: 0

Views: 283

Answers (3)

Ashokreddy
Ashokreddy

Reputation: 352

first you can download underscorejs then you can use the following code

 var foo = [{ "a": "1" }, { "b": "2" }, { "a": "1" }];
            var result = _.uniq(foo, function (obj) {
                return JSON.stringify(obj);
            });


 refere the following url  http://underscorejs.org/

Upvotes: 1

Errorpro
Errorpro

Reputation: 2423

You can use var uniqueList =_.uniq(foo, 'a'); Here is doc: https://lodash.com/docs#uniq here is plunker: http://plnkr.co/edit/HkirGPrs3dGZMUEnEKiT?p=preview

Upvotes: 0

Matt Way
Matt Way

Reputation: 33199

You can do this by simply using uniq, not requiring collection:

var uniqueList =_.uniq(foo, function( x ){
    return JSON.stringify(x);
});

Updated plunk here: http://plnkr.co/edit/KYW6UybdiBxuvOVX8naP?p=preview

Upvotes: 2

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