使用 underscore.js 将多个数组组合到对象集合

Question

I have some information collected by array, like:

var names = ["Jack", "Marry", "Bob"]
var cars = ["Audi", "BMW", "Volvo"]

I want these info combine to object like collection, like:

[{name:"Jack", car: "Audi"}, {name: "Marry", car:"BMW"}, {name:"Bob", car:"Volvo"}]

I can do this by some steps:

var combine = _.zip(names, cars)
var collection= _.map(combine, function(info){
                      return _.object(["name", "car"], info);
                     });

Is there other way to make code look better? Thanks

Answer 1

How about es5 array.map() ?

var names = ["Jack", "Marry", "Bob"]
var cars = ["Audi", "BMW", "Volvo"]

var result = names.map(function(val, key){
 return {name: val, car: cars[key]}
})

console.log(result); //[{car: "Audi", name: "Jack"}, {car: "BMW", name: "Marry"}, {car: "Volvo", name: "Bob"}]

PS please add a condition for case if arrays will have different length

Answer 2

If you want to stick with Underscore, you could combine your two steps using chaining :

var result = _(names).chain()
                     .zip(cars)
                     .map(function(a) { return { name: a[0], car: a[1] } })
                     .value();