How to add variable to array [JS]

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How to add variable to array [JS]

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#1 by (3 votes)
#2 by (2 votes)

2

I have the following code:

var newLat = markerElem.getAttribute('lat');
var newLng = markerElem.getAttribute('lng');

var locations = [
    {lat: newLat, lng: newLng}
]

I want to get the values of the variables newLat and newLng and store them within the locations array as values of their respective indexes.

EXAMPLE

I want the values of the variables newLat and newLng to be passed to the indexes of array lat and lng , thus:

var newLat = 123;
var newLng = 321;

var locations = [
    {lat: 123, lng: 321}
]

javascript array

asked by anonymous 29.06.2018 / 15:55

2 answers

3

You can change the values this way:

var locations = [
    {lat: '', lng: ''}
]

var markerElem = document.getElementById("div");
var newLat = markerElem.getAttribute('lat');
var newLng = markerElem.getAttribute('lng');

locations[0].lat = newLat; // altera lat
locations[0].lng = newLng; // altera lng

console.log(locations);

<div id="div" lat="123" lng="456"></div>

locations[0] selects the first array index.

If you want to add a new index to the array, you can do this:

var locations = [];

var markerElem = document.getElementById("div");
var lat = markerElem.getAttribute('lat');
var lng = markerElem.getAttribute('lng');

locations.push({ lat , lng });

console.log(locations);

<div id="div" lat="123" lng="456"></div>

Placing just the name of the variable, the name and value are already added of the variable as the object's key in the array.

29.06.2018 / 16:05

Filter through the href java.lang.ClassNotFoundException sun.misc.GC [closed]

score 2 · Accepted Answer

2

If your wish is to add to the array do

locations.push({ lat: newLat , lng: newLng});

The javascript will add a new index in your array and then to retrieve it just go through it.

29.06.2018 / 22:26