How can I customize the appearance of a button using JavaScript code?

After successfully implementing a Mapbox map on my website, I encountered a challenge. I wanted to add a button on top of the mapview, but couldn't figure out how to do so using HTML as it always ended up below the map. To overcome this obstacle, I found a solution by creating a programmatic button in JavaScript.

function setupMap(center){
    const map = new mapboxgl.Map({
        container: 'map',
        style: 'mapbox://styles/mapbox/streets-v11',
        center: center,
        zoom: 14
    });
    

const nav = new mapboxgl.NavigationControl();
map.addControl(nav);
var button = document.body.appendChild(document.createElement('button'));
button.style = 'z-index:10;position:absolute;top:10px;right:10px;';
button.textContent = 'Calculate Consumption';

Now I am looking to customize the style of the button. Is there a way to achieve this? Alternatively, is there a method to place a standard HTML button on top of the map?

javascripthtmlcssmapbox-gl-js

Answer №1

To customize the button style, one effective method is to assign an id to the button for easier access

function configureMap(center){
const map = new mapboxgl.Map({
    container: 'map',
    style: 'mapbox://styles/mapbox/streets-v11',
    center: center,
    zoom: 14
});


const nav = new mapboxgl.NavigationControl();
map.addControl(nav);
var button = document.body.appendChild(document.createElement('button'));
button.style = 'z-index:10;position:absolute;top:10px;right:10px;';
button.textContent = 'Calculate Consumption';
button.id = 'map-button';

Then, implement the following:

const mapButton = document.getElementById('map-button');
mapButton.classList.add('map-button--edited');

You can then define your styles in the newly added class map-button--edited as required.

Answer №2

To achieve the desired style mentioned earlier, simply include the following in your button.style :

border-radius: 5px;background-color: white; padding: 10px;font-size: 20px;

The updated code will look something like this :

function initializeMap(center){
    const map = new mapboxgl.Map({
        container: 'map',
        style: 'mapbox://styles/mapbox/streets-v11',
        center: center,
        zoom: 14
    });
    

const navigation = new mapboxgl.NavigationControl();
map.addControl(navigation);
var button = document.body.appendChild(document.createElement('button'));
button.style = 'z-index:10;position:absolute;top:10px;right:10px;border-radius: 5px;background-color: white; padding: 10px;font-size: 20px;';
button.textContent = 'Calculate Consumption';

Feel free to adjust the values of border-radius, padding, and font-size as needed.

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