JSFiddle - React, Tailwind, and code Playground

by basmaat

HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.5.2/underscore-min.js"></script>

JavaScript

var people = [{firstName : "Thein", city : "ny", qty : 5},{firstName : "Michael", city : "ny", qty : 3}, {firstName : "Bloom", city : "nj", qty : 10} ];

_.mixin({ 
    pluckMany: function() {
        var args = _.rest(arguments, 1);
        return _.map(arguments[0], function(item) {
            var obj = {};
            _.each(args, function(arg) {
                obj[arg] = item[arg]; 
            });
            return obj;
        });
    }
});

var projected = _.chain(people).where({city : "ny"}).pluckMany( "firstName", "qty").value();
console.log(JSON.stringify(projected));