Merge two arrays of objects containing Google Map coordinates

Question

Merge two arrays of objects containing Google Map coordinates

I am facing a challenge with merging two object arrays that have similar values.

var Cars = [{
    lat: 42,
    lng: -72
}, {
    lat: 40.7127837,
    lng: -74.0059413
}, {
    lat: 40.735657,
    lng: -74.1723667
}];

var Trucks = [{
    lat: 43,
    lng: -72.5
}, {
    lat: 40.612837,
    lng: -74.1239413
}, {
    lat: 40.564657,
    lng: -74.1803667
}];

I attempted to merge the arrays using the code below, but unfortunately, all I see in the console are a bunch of objects with no values.

var Vehicles = Cars.concat(Trucks);

for (var i = 0; i < Vehicles.length; i++)
{
    console.log(Vehicles[i]);
}

javascript arrays

Answer 1

Answer №1

Transform the cars array by adding all elements from the Trucks array to it

EDIT: Explanation

Both Cars and Trucks are arrays. The push function on the Array prototype allows you to add multiple elements to an array. For example:

var a = [1,2];
a.push(3,4,5);
console.log(a); // => [1,2,3,4,5]

By using apply on any function, you can specify both the value of this within the function and pass in an array as parameters. So when you do

Array.prototype.push.apply(a, [3,4,5])

it will call the push function on array a with parameters 3, 4, and 5.

EDIT 2: Keep in mind that this action will replace the original array passed as the first parameter in the apply function call.

Answer 2

Transform the cars array by adding all elements from the Trucks array to it

EDIT: Explanation

Both Cars and Trucks are arrays. The push function on the Array prototype allows you to add multiple elements to an array. For example:

var a = [1,2];
a.push(3,4,5);
console.log(a); // => [1,2,3,4,5]

By using apply on any function, you can specify both the value of this within the function and pass in an array as parameters. So when you do

Array.prototype.push.apply(a, [3,4,5])

it will call the push function on array a with parameters 3, 4, and 5.

EDIT 2: Keep in mind that this action will replace the original array passed as the first parameter in the apply function call.

Merge two arrays of objects containing Google Map coordinates

Answer №1

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