1
我想希望把幾個標記在地圖上，這些標記是由「父」標記和「孩子」標記上。所有父標記應同時在地圖上可見，而如果點擊特定父標記，則應切換開/關特定父標記的子標記我創建了以下工作示例以演示：單張：內創建單獨的事件監聽for循環
<!DOCTYPE html>
<html>
<head> \t
\t <title>Test 1</title>
\t <meta charset="utf-8" />
\t <meta name="viewport" content="width=device-width, initial-scale=1.0">
\t <link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/leaflet.css" />
\t <script src="https://unpkg.com/[email protected]/dist/leaflet.js"></script>
<style>
body {padding: 0; margin: 0;}
html, body, #map {height: 100%;}
</style>
</head>
<body>
<div id='map'></div>
<script>
var thunder = L.tileLayer('https://{s}.tile.thunderforest.com/neighbourhood/{z}/{x}/{y}.png', {subdomains:'abc', attribution:'<a href="http://www.thunderforest.com">Thunderforest</a> | <a href="http://www.openstreetmap.org/copyright/">OpenStreetMap</a>' });
var map = L.map('map',{layers: [thunder]}).setView([50.08, 10.08], 12);
var parent1 = L.marker([50.0, 10.0]).bindPopup('Marker 1');
var parent2 = L.marker([50.1, 10.1]).bindPopup('Marker 2');;
var layergroupParents = L.layerGroup([parent1, parent2]);
layergroupParents.addTo(map);
var child1a = L.marker([50.02, 10.02],{title: 'Child 1a'});
var child1b = L.marker([50.04, 10.04],{title: 'Child 1b'});
var layergroupChilds1 = L.layerGroup([child1a, child1b]);
var child2a = L.marker([50.12, 10.12],{title: 'Child 2a'});
var child2b = L.marker([50.14, 10.14],{title: 'Child 2b'});
var layergroupChilds2 = L.layerGroup([child2a, child2b]);
parent1.on('click', function(){
if (map.hasLayer(layergroupChilds1)) {
\t map.removeLayer(layergroupChilds1)
} else {
layergroupChilds1.addTo(map);
\t }
});
parent2.on('click', function(){
if (map.hasLayer(layergroupChilds2)) {
\t map.removeLayer(layergroupChilds2)
} else {
layergroupChilds2.addTo(map);
\t }
});
</script>
</body>
</html>因爲我想顯示相當多的標誌，我想for循環的幫助下把標記的特性爲Array（「markerArray」），並處理其標誌：
<!DOCTYPE html>
<html>
<head> \t
\t <title>Test 2</title>
\t <meta charset="utf-8" />
\t <meta name="viewport" content="width=device-width, initial-scale=1.0">
\t <link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/leaflet.css" />
\t <script src="https://unpkg.com/[email protected]/dist/leaflet.js"></script>
<style>
body {padding: 0; margin: 0;}
html, body, #map {height: 100%;}
</style>
</head>
<body>
<div id='map'></div>
<script>
var thunder = L.tileLayer('https://{s}.tile.thunderforest.com/neighbourhood/{z}/{x}/{y}.png', {subdomains:'abc', attribution:'<a href="http://www.thunderforest.com">Thunderforest</a> | <a href="http://www.openstreetmap.org/copyright/">OpenStreetMap</a>' });
var map = L.map('map',{layers: [thunder]}).setView([50.08, 10.08], 12);
var markerArray = [
["Marker 1", 50.0, 10.0, [["Child 1a", 50.02, 10.02], ["Child 1b", 50.04, 10.04]]],
["Marker 2", 50.1, 10.1, [["Child 1a", 50.12, 10.12], ["Child 1b", 50.14, 10.14]]],
];
var numberParents = markerArray.length;
var layergroupParents = L.layerGroup();
for (cnt1=0; cnt1<numberParents; cnt1++) {
var parentObject = L.marker([markerArray[cnt1][1], markerArray[cnt1][2]]);
parentObject.bindPopup(markerArray[cnt1][0]);
layergroupParents.addLayer (parentObject);
var numberChilds = markerArray[cnt1][3].length;
var layergroupChilds = L.layerGroup();
for (cnt2=0; cnt2<numberChilds; cnt2++) {
var childObject = L.marker([markerArray[cnt1][3][cnt2][1], markerArray[cnt1][3][cnt2][2]], {title: markerArray[cnt1][3][cnt2][0]});
layergroupChilds.addLayer (childObject);
}
parentObject.on('click', function(){
if (map.hasLayer(layergroupChilds)) {
\t \t map.removeLayer(layergroupChilds)
\t \t } else {
layergroupChilds.addTo(map);
\t \t }
});
}
layergroupParents.addTo(map);
</script>
</body>
</html>如果執行這些腳本，你會看到，有一些問題，每一個人家長標誌分配一個單獨的「click」事件。現在，即使我點擊第一個父標記，最後父標記的子標記也會打開/關閉。
你知道我該如何解決這些問題，腳本2是否像腳本1一樣工作？