我正在开发一个涉及打开和关闭两个GeoJSON图层的Web地图。我之前使用Mapbox JS通过删除图层并使用自定义HTML按钮添加它们来实现这一点,但是使用Mapbox GL JS遇到了一个问题。我要做的就是使用HTML按钮打开和关闭两个图层(显示和隐藏),而不是附加到创建的CSS菜单的链接:
var layers = document.getElementById('menu');
layers.appendChild(link);
我想我可以将函数绑定到button元素,但无法让它正常工作:
document.getElementById("toggle-layer-one").onclick = function() {};
HTML:
<button data-balloon="Campsite" data-balloon-pos="right" id="toggle-layer-one"></button>
CSS
#toggle-layer-one {
background-image: url("../Assets/Campsite.svg");
background-size: 70px 70px;
height: 70px;
width: 70px;
border-top: 1px solid #fff;
}
JS
map.on('style.load', function () {
map.addSource("sample", {
type: "geojson",
data: "https://raw.githubusercontent.com/aarontaveras/Sample-GeoJSON-Data/master/sample.geojson"
});
map.addLayer({
"id": "sample-point-one",
"type": "symbol",
"source": "sample",
"filter": ["==", "$type", "Point"],
"layout": {
"icon-image": "circle-15",
"icon-size": 1,
"icon-anchor": "center",
}
});
map.setFilter('sample-point-one', ['==', 'region', 'Africa']);
map.addLayer({
"id": "sample-point-two",
"type": "symbol",
"source": "sample",
"filter": ["==", "$type", "Point"],
"layout": {
"icon-image": "circle-15",
"icon-size": 1,
"icon-anchor": "center",
}
});
map.setFilter('sample-point-two', ['==', 'region', 'Asia']);
});
// Toggle layers
var toggleableLayerIds = ["sample-point-one", "sample-point-two"];
for (var i = 0; i < toggleableLayerIds.length; i++) {
var id = toggleableLayerIds[i];
var link = document.createElement('a');
link.href = '#';
link.className = 'active';
link.textContent = id;
link.onclick = function (e) {
var clickedLayer = this.textContent;
e.preventDefault();
e.stopPropagation();
var visibility = map.getLayoutProperty(clickedLayer, 'visibility');
if (visibility === 'visible') {
map.setLayoutProperty(clickedLayer, 'visibility', 'none');
this.className = '';
} else {
this.className = 'active';
map.setLayoutProperty(clickedLayer, 'visibility', 'visible');
}
};
var layers = document.getElementById('menu');
layers.appendChild(link);
}
谢谢!
我最终搞清楚了。
HTML:
<a id="test" href="#">TEST</a>
JS:
var toggleLayerId = ["sample-point-one"];
document.getElementById("test").onclick = function (e){
for (var index in toggleLayerId) {
var clickedLayer = toggleLayerId[index];
e.preventDefault();
e.stopPropagation();
var visibility = map.getLayoutProperty(clickedLayer, 'visibility');
if (visibility === 'visible') {
map.setLayoutProperty(clickedLayer, 'visibility', 'none');
this.className = '';
} else {
this.className = 'active';
map.setLayoutProperty(clickedLayer, 'visibility', 'visible');
}
}
};