The leaflet map is displaying in a dull and monoch

Question

The leaflet map is displaying in a dull and monoch

After starting leaflet.js using the quickstart, my map appears grey. Is there a missing element in my setup?

script.js:

var leafletMap = L.map('leafletMap').setView([51.505, -0.09], 13);

L.tileLayer('http://{s}.title.cloudmade.com/' + API_KEY + '/997/256/{z}/{x}/{y}.png', {
        attribution: 'Map data &copy; [...]',
        maxZoom: 18
}).addTo(leafletMap);

// Marker
var marker = L.marker([51.5, -0.09]).addTo(leafletMap);

style.css:

#leafletMap {
height: 200px;
width: 200px;
}

index.html:

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>My title</title>

    <link rel='stylesheet' href='css/bootstrap.css'>
    <link rel='stylesheet' href='css/leaflet.css'>
    <!--[if lte IE 8]>
        <link rel="stylesheet" href="leaflet.ie.css" />
    <![endif]-->
    <link rel="stylesheet" href="css/style.css">
</head>
<body>

    <div id='leafletMap'></div>

<script src='js/libs/jquery-1.10.2.js'></script>
<script src='js/libs/bootstrap.js'></script>
<script src='js/libs/leaflet-src.js'></script>
<script src='js/config.js'></script>
<script src='js/script.js'></script>
</body>
</html>

Result:

javascript openstreetmap leaflet

Answer 1

Answer №1

To move forward, the next step is to follow the Quick Start Guide and implement the upcoming section. While you've successfully initialized the map, it appears gray because you have yet to add any tile layers to it. Keep progressing by reading the section that starts with Next we’ll add a tile layer to add to our map.

Answer 2

To move forward, the next step is to follow the Quick Start Guide and implement the upcoming section. While you've successfully initialized the map, it appears gray because you have yet to add any tile layers to it. Keep progressing by reading the section that starts with Next we’ll add a tile layer to add to our map.

Answer 3

Answer №2

Give this a shot upon page load:

setTimeout(function() {
    window.dispatchEvent(new Event('load'));
}, 1000);

Answer 4

Give this a shot upon page load:

setTimeout(function() {
    window.dispatchEvent(new Event('load'));
}, 1000);

Answer 5

Answer №3

Keep an eye on this important detail.

If you observe that the network tab shows the map tiles loading correctly, but the map itself remains gray, it could be due to CSS contamination from the rest of your webpage.

In my personal experience, the culprit was:

img {
    max-height: 100%;
}

I resolved this issue by overriding it with:

.my-leaflet-map-container img {
    max-height: none;
}

Answer 6

Keep an eye on this important detail.

If you observe that the network tab shows the map tiles loading correctly, but the map itself remains gray, it could be due to CSS contamination from the rest of your webpage.

In my personal experience, the culprit was:

img {
    max-height: 100%;
}

I resolved this issue by overriding it with:

.my-leaflet-map-container img {
    max-height: none;
}

Answer 7

Answer №4

You should include a tile layer, like the one provided by Open Street Maps

// To start using Leaflet
var map = L.map('map').setView({lon: 0, lat: 0}, 2);

// Insert the OpenStreetMap tiles
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
  maxZoom: 19,
  attribution: '&copy; <a href="https://openstreetmap.org/copyright">OpenStreetMap contributors</a>'
}).addTo(map);

#map {height: 280px}

<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.7.1/leaflet.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.7.1/leaflet.css" />

<div id="map"></div>

Answer 8

You should include a tile layer, like the one provided by Open Street Maps

// To start using Leaflet
var map = L.map('map').setView({lon: 0, lat: 0}, 2);

// Insert the OpenStreetMap tiles
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
  maxZoom: 19,
  attribution: '&copy; <a href="https://openstreetmap.org/copyright">OpenStreetMap contributors</a>'
}).addTo(map);

#map {height: 280px}

<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.7.1/leaflet.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.7.1/leaflet.css" />

<div id="map"></div>

Answer 9

Answer №5

Ensure that your map-container has a height greater than zero. In my situation, I made the mistake of linking my CSS file too late; it was placed at the end of my <body> tag.

As a result, my map container;

<div id="map"></div>

, likely had a height of 0px when it loaded.

Consequently, the map and its tiles attempted to load into a 0px height space, creating a small tile "buffer"; everything beyond the buffer zone appeared grey.

To resolve this issue, I included a reference to my CSS file in the <head>. Placing the CSS file reference in the <head> accomplishes two things:

It is considered a best practice
It ensures that the styles are applied before the map loads

UPDATE

Remember to also include the Leaflet CSS file (if you have not already done so). Otherwise, your tiles may appear "mismatched" or staggered.

<link rel="stylesheet" 
      href="https://unpkg.com/<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="5b373e3a3d373e2f1b6a756e756a">[email protected]</a>/dist/leaflet.css"
      integrity="sha512-xwE/Az9zrjBIphAcBb3F6JVqxf46+CDLwfLMHloNu6KEQCAWi6HcDUbeOfBIptF7tcCzusKFjFw2yuvEpDL9wQ=="
      crossorigin=""/>

Another solution is to adjust the style attribute of your map-container directly in the HTML code (i.e., inline CSS in HTML). Personally, I prefer keeping my CSS in a separate CSS file.

Answer 10

Ensure that your map-container has a height greater than zero. In my situation, I made the mistake of linking my CSS file too late; it was placed at the end of my <body> tag.

As a result, my map container;

<div id="map"></div>

, likely had a height of 0px when it loaded.

Consequently, the map and its tiles attempted to load into a 0px height space, creating a small tile "buffer"; everything beyond the buffer zone appeared grey.

To resolve this issue, I included a reference to my CSS file in the <head>. Placing the CSS file reference in the <head> accomplishes two things:

It is considered a best practice
It ensures that the styles are applied before the map loads

UPDATE

Remember to also include the Leaflet CSS file (if you have not already done so). Otherwise, your tiles may appear "mismatched" or staggered.

<link rel="stylesheet" 
      href="https://unpkg.com/<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="5b373e3a3d373e2f1b6a756e756a">[email protected]</a>/dist/leaflet.css"
      integrity="sha512-xwE/Az9zrjBIphAcBb3F6JVqxf46+CDLwfLMHloNu6KEQCAWi6HcDUbeOfBIptF7tcCzusKFjFw2yuvEpDL9wQ=="
      crossorigin=""/>

Another solution is to adjust the style attribute of your map-container directly in the HTML code (i.e., inline CSS in HTML). Personally, I prefer keeping my CSS in a separate CSS file.

Answer 11

Answer №6

To fix the issue in my Ionic app, I successfully addressed it by adding the parameter trackResize: false to my map configuration. Interestingly, this problem was specific to Android devices and was triggered by a function called setTransform in the Leaflet source code, which is only invoked on Android platforms.

Leaflet.map('map', {
     trackResize: false
})

Answer 12

To fix the issue in my Ionic app, I successfully addressed it by adding the parameter trackResize: false to my map configuration. Interestingly, this problem was specific to Android devices and was triggered by a function called setTransform in the Leaflet source code, which is only invoked on Android platforms.

Leaflet.map('map', {
     trackResize: false
})

Answer 13

Answer №7

Have you ensured that you have included a value for the API_KEY in your code?

Upon my initial attempt at running the quickstart, I encountered the issue of my map appearing grey. It wasn't until I realized that I had forgotten to obtain an API access code (specifically for Mapbox's service in my case).

It seems that your URL line makes reference to API_KEY, yet there is no apparent declaration for it in your code.

Answer 14

Have you ensured that you have included a value for the API_KEY in your code?

Upon my initial attempt at running the quickstart, I encountered the issue of my map appearing grey. It wasn't until I realized that I had forgotten to obtain an API access code (specifically for Mapbox's service in my case).

It seems that your URL line makes reference to API_KEY, yet there is no apparent declaration for it in your code.

Answer 15

Answer №8

If you're facing problems with embedding content within something else, elMarquis notes can come in handy. For instance, when I was using Gravity Forms on Wordpress, I encountered issues with image styles that had a broad reach and were marked as important.

While I'm still in pursuit of the ultimate solution, here is a snippet to kickstart your troubleshooting if you're dealing with a similar issue:

<style>
    #map { position: inherit; top:0; bottom:0; right:0; left:0; width:100%; height:300px;}
    .gform_wrapper ul li.gfield.gfield_html .leaflet-container img { max-width: none!important;}
  </style>

Answer 16

If you're facing problems with embedding content within something else, elMarquis notes can come in handy. For instance, when I was using Gravity Forms on Wordpress, I encountered issues with image styles that had a broad reach and were marked as important.

While I'm still in pursuit of the ultimate solution, here is a snippet to kickstart your troubleshooting if you're dealing with a similar issue:

<style>
    #map { position: inherit; top:0; bottom:0; right:0; left:0; width:100%; height:300px;}
    .gform_wrapper ul li.gfield.gfield_html .leaflet-container img { max-width: none!important;}
  </style>

Answer 17

Answer №9

When using frameworks like Vue.js, sometimes you may need to initialize a map function inside a setTimeout:

 mounted() {
    setTimeout(()=>{
      this.map = L.map(this.$refs.map).setView([-12.256545945045046, -55.52556684608532], 4)
      L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
        attribution: '© OpenStreetMap contributors'
      }).addTo(this.map)
    }, 500)
  },

Answer 18

When using frameworks like Vue.js, sometimes you may need to initialize a map function inside a setTimeout:

 mounted() {
    setTimeout(()=>{
      this.map = L.map(this.$refs.map).setView([-12.256545945045046, -55.52556684608532], 4)
      L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
        attribution: '© OpenStreetMap contributors'
      }).addTo(this.map)
    }, 500)
  },

The leaflet map is displaying in a dull and monoch

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

Answer №6

Answer №7

Answer №8

Answer №9

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