我有7个leaflet地图，通过循环和数据创建，每个地图上的数据完全相同，并由复选框控制；但是我的计划是每个地图只显示一个图层。我寻找过许多解决方案，希望在保留地图的同时，每个地图只有一个图层，但都没有成功。我想到当页面加载时默认保留一种图层的可见性，但我似乎也找不到任何相关信息。是否有人知道如何实现？我已经在代码中留下了一个图层的坐标
Toe_11000（“11000年前”的复选框），因为我的坐标超过了字符限制，如果需要澄清，请告诉我。如果需要更多图层的坐标，则可以在此JSFiddle中找到完整的代码：https://jsfiddle.net/wpc6707/3ksjh06p/21/。
这是我的代码：
var basemapTile =
"https://stamen-tiles-{s}.a.ssl.fastly.net/terrain-background/{z}/{x}/{y}.{ext}";
var basemapOptions = {
attribution: 'Map tiles by <a href="http://stamen.com">Stamen Design</a>, <a href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a> — Map data © <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors',
subdomains: "abcd",
minZoom: 0,
maxZoom: 18,
ext: "png",
};
var glacier_map_Data = {
glacier_1: {
center: [45.5, -89.5],
zoom: 7,
description: "Glacier one",
// add title, shapes etc here
/*Glacier 11000*/
shape: (Toe_11000 = {
type: "FeatureCollection",
features: [{
type: "Feature",
geometry: {
type: "Polygon",
coordinates: [
[
[-89.01714901099996, 47.701660041000025],
[-88.98864567199996, 47.67105872900004],
[-88.89693208899996, 47.632717624000065],
[-88.76124959199996, 47.56169631900008],
[-88.58375016199994, 47.49178961600006],
[-88.44017698199997, 47.44707161100007],
[-88.30330388599998, 47.44691295700005],
[-88.17169811099996, 47.44667491700005],
[-88.02148343399995, 47.45132287700005],
[-87.87715720599994, 47.43981218000005],
[-87.74844734199996, 47.433784306000064],
[-87.64558455399998, 47.43885976400003],
[-87.53193680099997, 47.44896815100003],
[-87.38107493899997, 47.46526214000005],
[-87.24572687999995, 47.48530297000008],
[-87.13143423099996, 47.50392737300007],
[-86.98182199599995, 47.53937042800004],
[-86.82927429899996, 47.57632309400003],
[-86.62586405499997, 47.62051563700004],
[-86.53722267999996, 47.642872296000064],
[-86.52848360499996, 47.655108436000035],
[-86.66049972099995, 47.65724573000006],
[-89.01447077999995, 47.70342257000004],
[-89.01714901099996, 47.701660041000025],
],
],
},
properties: {
OBJECTID_1: 1,
OBJECTID: 1,
Years_Ago: 11000,
SHAPE_Leng: 387749.141631,
Shape_Le_1: 5.06435076694,
Shape_Area: 0.429078160361,
filename: "11000.jpg",
},
}, ],
}),
shape_style: (g11000 = L.geoJSON(Toe_11000, {
style: {
color: "#e41a1c"
},
})),
shape_listener: g11000.on({
click: function() {
$("#panel").html(
Toe_11000.features[0].properties.Years_Ago +
" Years Ago" +
info11000 +
glacierInfo +
selfPlug
);
},
}),
},
glacier_2: {
center: [45.5, -89.5],
zoom: 7,
description: "Glacier two",
// add title, shapes etc here
/*Glacier 14600*/
shape: (Toe_14600 = {
type: "FeatureCollection",
features: [{
type: "Feature",
geometry: {
type: "Polygon",
coordinates: [
[
],
],
},
properties: {
OBJECTID_1: 1,
OBJECTID: 1,
Years_Ago: 14600,
SHAPE_Leng: 2202706.20984,
Shape_Le_1: 25.0028099606,
Shape_Area: 17.1995913109,
filename: "14600.jpg",
},
}, ],
}),
shape_style: (g14600 = L.geoJSON(Toe_14600, {
style: {
color: "blue"
},
})),
shape_listener: g14600.on({
click: function() {
$("#panel").html(
Toe_14600.features[0].properties.Years_Ago +
" Years Ago" +
info14600 +
glacierInfo +
selfPlug
);
},
}),
},
glacier_3: {
center: [45.5, -89.5],
zoom: 7,
description: "Glacier three",
// add title, shapes etc here
shape: (Toe_17000 = {
type: "FeatureCollection",
features: [{
type: "Feature",
geometry: {
type: "Polygon",
coordinates: [
[
],
],
},
properties: {
OBJECTID_1: 1,
OBJECTID: 2,
Years_Ago: 17000,
SHAPE_Leng: 2261336.18634,
Shape_Le_1: 24.4337768448,
Shape_Area: 21.6098467975,
filename: "17000.jpg",
},
}, ],
}),
shape_style: (g17000 = L.geoJSON(Toe_17000, {
style: {
color: "#4daf4a"
},
})),
shape_listener: g17000.on({
click: function() {
$("#panel").html(
Toe_17000.features[0].properties.Years_Ago +
" Years Ago" +
info17000 +
glacierInfo +
selfPlug
);
},
}),
},
glacier_4: {
center: [45.5, -89.5],
zoom: 7,
description: "Glacier four",
// add title, shapes etc here
/*Glacier 20500*/
shape: (Toe_20500 = {
type: "FeatureCollection",
features: [{
type: "Feature",
geometry: {
type: "MultiPolygon",
coordinates: [
[
[
],
],
[
[
],
],
],
},
properties: {
OBJECTID_1: 1,
OBJECTID: 1,
Years_Ago: 20500,
SHAPE_Leng: 3087165.91023,
Shape_Le_1: 33.5221258781,
Shape_Area: 32.9568211425,
filename: "20500.jpg",
},
}, ],
}),
shape_style: (g20500 = L.geoJSON(Toe_20500, {
style: {
color: "#ffff33"
},
})),
shape_listener: g20500.on({
click: function() {
$("#panel").html(
Toe_20500.features[0].properties.Years_Ago +
" Years Ago" +
info20500 +
glacierInfo +
selfPlug
);
},
}),
},
glacier_5: {
center: [45.5, -89.5],
zoom: 7,
description: "Glacier five",
// add title, shapes etc here
/*Glacier 24000*/
shape: (Toe_24000 = {
type: "FeatureCollection",
features: [{
type: "Feature",
geometry: {
type: "Polygon",
coordinates: [
[
],
],
},
properties: {
OBJECTID_1: 1,
OBJECTID: 1,
Years_Ago: 24000,
SHAPE_Leng: 3034250.36063,
Shape_Le_1: 33.0014683974,
Shape_Area: 35.7394984299,
filename: "24000.jpg",
},
}, ],
}),
shape_style: (g24000 = L.geoJSON(Toe_24000, {
style: {
color: "#984ea3"
},
})),
shape_listener: g24000.on({
click: function() {
$("#panel").html(
Toe_24000.features[0].properties.Years_Ago +
" Years Ago" +
info24000 +
glacierInfo +
selfPlug
);
},
}),
},
glacier_6: {
center: [45.5, -89.5],
zoom: 7,
description: "Glacier six",
// add title, shapes etc here
/*Glacier 27500*/
shape: (Toe_27500 = {
type: "FeatureCollection",
features: [{
type: "Feature",
geometry: {
type: "Polygon",
coordinates: [
[
],
],
},
properties: {
OBJECTID_1: 1,
OBJECTID: 1,
Years_Ago: 27500,
SHAPE_Leng: 2984589.95454,
Shape_Le_1: 32.3931138132,
Shape_Area: 34.4347324387,
filename: "27500.jpg",
},
}, ],
}),
shape_style: (g27500 = L.geoJSON(Toe_27500, {
style: {
color: "#ff7f00"
},
})),
shape_listener: g27500.on({
click: function() {
$("#panel").html(
Toe_27500.features[0].properties.Years_Ago +
" Years Ago" +
info27500 +
glacierInfo +
selfPlug
);
},
}),
},
glacier_7: {
center: [45.5, -89.5],
zoom: 7,
description: "Glacier seven",
// add title, shapes etc here
shape: (Toe_31500 = {
type: "FeatureCollection",
features: [{
type: "Feature",
geometry: {
type: "Polygon",
coordinates: [
[
],
],
},
properties: {
OBJECTID_1: 1,
OBJECTID: 2,
Years_Ago: 31500,
SHAPE_Leng: 1478866.18087,
Shape_Le_1: 15.9994195189,
Shape_Area: 9.83976333148,
filename: "31500.jpg",
},
}, ],
}),
shape_style: (g31500 = L.geoJSON(Toe_31500, {
style: {
color: "#a65628"
},
})),
shape_listener: g31500.on({
click: function() {
$("#panel").html(
Toe_31500.features[0].properties.Years_Ago +
" Years Ago" +
info31500 +
glacierInfo +
selfPlug
);
},
}),
},
};
var initMap = (EL) => {
var id = EL.dataset.map; // returns i.e: "glacier_1"
var data = glacier_map_Data[id];
var map = L.map(EL).setView(data.center, data.zoom);
L.tileLayer(basemapTile, basemapOptions).addTo(map);
var glacierLayers = L.control
.layers(null, {
//formatting from iH8 answer on StackOverflow https://dev59.com/f6Tja4cB1Zd3GeqPI-Ws#46044847
"31500 years ago": g31500,
"27500 years ago": g27500,
"24000 years ago": g24000,
"20500 years ago": g20500,
"17000 years ago": g17000,
"14600 years ago": g14600,
"11000 years ago": g11000,
})
.addTo(map);
};
var ELS_map = document.querySelectorAll("[data-map]");
ELS_map.forEach(initMap);/*Stylesheet by Will P. Campbell,2021*/
body {
background-color: #ececec;
}
/* idea from Roko C Buljian answer on StackOverflow: https://stackoverflow.com/q/68836662/16538252 */
[data-map] {
height: 650px;
width: 60%;
border: 5px solid black;
margin: 20px;
}
h1 {
font-family: "Franklin Gothic Medium", "Arial Narrow", Arial, sans-serif;
}
#panel {
position: relative;
right: 0;
border: 5px outset black;
background-color: lightblue;
text-align: center;
width: 25%;
height: auto;
padding: 20px;
display: inline-block;
}<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css" integrity="sha512-xodZBNTC5n17Xt2atTPuE1HxjVMSvLVW9ocqUKLsCC5CXdbqCmblAshOMAS6/keqq/sMZMZ19scR4PsZChSR7A==" crossorigin="" />
<script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js" integrity="sha512-XQoYMqMTK8LvdxXYG3nZ448hOEQiglfqkJs1NOQV44cWnUrBc8PkAOcXy20w0vlaXaVUearIOBhiXZ5V3ynxwA==" crossorigin=""></script>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>WISCONSIN GLACIER TIME LAPSE</title>
</head>
<body>
<h1>WISCONSIN GLACIER TIME LAPSE</h1>
<!-- map data divs -->
<div data-map="glacier_1"></div>
<div data-map="glacier_2"></div>
<div data-map="glacier_3"></div>
<div data-map="glacier_4"></div>
<div data-map="glacier_5"></div>
<div data-map="glacier_6"></div>
<div data-map="glacier_7"></div>
<!--idea from Roko C Buljian answer on StackOverflow: https://stackoverflow.com/q/68836662/16538252-->
<div id="panel"><b>Glacier Information Panel</b><br>
<p>Use the checkbox and click on each glacier to learn more about them!</p>
</div>
</body>
</html>