如何在单击时更改mapbox gl js标记图标，然后在单击新图标时将其更改回来？我可以弄清楚如何通过为其分配另一个类来更改单击时的标记，但是当单击新标记时，您将如何再次将其更改回来？我想知道是否有可能。谢谢。
<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8' />
<title></title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<link href="https://fonts.googleapis.com/css?family=Open+Sans" rel="stylesheet">
<script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.52.0/mapbox-gl.js'></script>
<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.52.0/mapbox-gl.css' rel='stylesheet' />
<style>
body { margin:0; padding:0; }
#map { position:absolute; top:0; bottom:0; width:100%; }
.marker {
background-image: url('mapbox-icon.png');
background-size: cover;
width: 50px;
height: 50px;
border-radius: 50%;
cursor: pointer;
}
.mapboxgl-popup {
max-width: 200px;
}
.mapboxgl-popup-content {
text-align: center;
font-family: 'Open Sans', sans-serif;
}
</style>
</head>
<body>
<div id='map'></div>
<script>
mapboxgl.accessToken = 'pk.eyJ1IjoiZXhhbXBsZXMiLCJhIjoiY2lqbmpqazdlMDBsdnRva284cWd3bm11byJ9.V6Hg2oYJwMAxeoR9GEzkAA';
var geojson = {
"type": "FeatureCollection",
"features": [{
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [-77.032, 38.913]
},
"properties": {
"title": "Mapbox",
"description": "Washington, D.C."
}
},
{
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [-122.414, 37.776]
},
"properties": {
"title": "Mapbox",
"description": "San Francisco, California"
}
}]
};
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/light-v10',
center: [-96, 37.8],
zoom: 3
});
// add markers to map
geojson.features.forEach(function(marker) {
// create a HTML element for each feature
var el = document.createElement('div');
el.className = 'marker';
// make a marker for each feature and add it to the map
new mapboxgl.Marker(el)
.setLngLat(marker.geometry.coordinates)
.setPopup(new mapboxgl.Popup({offset: 25}) // add popups
.setHTML('<h3>' + marker.properties.title + '</h3><p>' + marker.properties.description + '</p>'))
.addTo(map);
el.addEventListener('click', function(e){
// change the marker color, then change it back again.
// I can set for example el.className = 'marker2'
// but how can I change it back to the original
});
});
</script>
</body>
</html>
因此
，您将marker2类设置为单击的标记。在执行此操作之前，您可以在任何具有该类的元素上删除该类。像这样：
el.addEventListener('click', function(e){
// get all the elements with class "marker2"
var x = document.getElementsByClassName("marker2");
var i;
for (i = 0; i < x.length; i++) {
x[i].className = "marker"; // set "marker" as the class for each of those elements
}
// at this point all markers are back to the original state
// now you set the class of the current clicked marker
this.className = 'marker2'; //don't use the variable "el", it's out of the scope and can change, "this" is the current clicked element
}）;