At underscore js, Can I get multiple columns with pluck method after input where method as linq select projection

Question

var people = [
    {firstName : \"Thein\", city : \"ny\", qty : 5},
    {firstName : \"Michael\", city : \"ny\", qty : 3},
    {firstName : \"Bloom\", city : \"nj\", qty         


        

Answer 1

My understanding is the author of the question wants to take an array of objects with many properties and strip each object down to a small list of properties.

There are myriad ways of doing so with _ , but I like this way best. Pass in an empty result object which will be "this" inside the function. Iterate with _each , and _pick the fields you want:

var myObjects = [
    { "first" : "eric",
      "last" : "gumbo",
      "code" : "x482"
    },
    { "first" : "john",
      "last" : "dinkman",
      "code" : "y9283"
    }
];

var result = [];
_.each( myObjects, function(itm) { this.push(_.pick(itm,"first","code")) }, result );

console.log(result);