Question

86

Get object properties and values from array using lodash/underscore.js

rated 0 times [ 88] [ 2] / answers: 1 / hits: 19761 / 10 Years ago, wed, january 7, 2015, 12:00:00

I have an array like this:

var array = [ { 

    'data-price': '0.00',

    'data-term': '532',

    'data-model_id': '409',

  },

  { 

    'data-price': '0.00',

    'data-term': '483',

    'data-model_id': '384',

  },

  { text: 'dffdfddgfdgf' } ];

I want to filter out the last object and extract [{data-model_id:409},{data-model_id:384}] from the first two objects. I have tried this code:

 var k = _(array).filter('data-model_id').pluck('data-model_id').value();

console.log(k);

and it returns an array of the values only, [409, 384] . Is there a function to return the whole objects in lodash or underscore?

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jackie

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answered 10 Years ago keana · Accepted Answer

Using plain JS to show the logic: you need to filter out the elements that don't have the key, then map the new collection to another form:

array.filter( function(item){

    return 'data-model_id' in item;

  }).map( function( item ){

    return { 'data-model_id' : item['data-model_id'] }

  });

http://jsfiddle.net/dn4tn6xv/7/