Class: Popup

A popup component.

Example

Create a popup

let popup = new Popup();
// Set an event listener that will fire
// any time the popup is opened
popup.on('open', function(){
  console.log('popup was opened');
});

Example

Create a popup

let popup = new Popup();
// Set an event listener that will fire
// any time the popup is closed
popup.on('close', function(){
  console.log('popup was closed');
});

Example

let markerHeight = 50, markerRadius = 10, linearOffset = 25;
let popupOffsets = {
 'top': [0, 0],
 'top-left': [0,0],
 'top-right': [0,0],
 'bottom': [0, -markerHeight],
 'bottom-left': [linearOffset, (markerHeight - markerRadius + linearOffset) * -1],
 'bottom-right': [-linearOffset, (markerHeight - markerRadius + linearOffset) * -1],
 'left': [markerRadius, (markerHeight - markerRadius) * -1],
 'right': [-markerRadius, (markerHeight - markerRadius) * -1]
 };
let popup = new Popup({offset: popupOffsets, className: 'my-class'})
  .setLngLat(e.lngLat)
  .setHTML("<h1>Hello World!</h1>")
  .setMaxWidth("300px")
  .addTo(map);

See

• Display a popup
• Display a popup on hover
• Display a popup on click
• Attach a popup to a marker instance

Events

open Fired when the popup is opened manually or programmatically. popup object that was opened

close Fired when the popup is closed manually or programmatically. popup object that was closed

Hierarchy

• Evented

↳ Popup

Methods

addClassName

▸ addClassName(className): void

Adds a CSS class to the popup container element.

Parameters

Name	Type	Description
className	string	Non-empty string with CSS class name to add to popup container

Returns

void

Example

let popup = new Popup()
popup.addClassName('some-class')

Defined in

src/ui/popup.ts:481

---

addTo

▸ addTo(map): this

Adds the popup to a map.

Parameters

Name	Type	Description
map	Map	The MapLibre GL JS map to add the popup to.

Returns

this

this

Example

new Popup()
  .setLngLat([0, 0])
  .setHTML("<h1>Null Island</h1>")
  .addTo(map);

See

• Display a popup
• Display a popup on hover
• Display a popup on click
• Show polygon information on click

Defined in

src/ui/popup.ts:192

---

getElement

▸ getElement(): HTMLElement

Returns the Popup's HTML element.

Returns

HTMLElement

element

Example

Change the Popup element's font size

let popup = new Popup()
  .setLngLat([-96, 37.8])
  .setHTML("<p>Hello World!</p>")
  .addTo(map);
let popupElem = popup.getElement();
popupElem.style.fontSize = "25px";

Defined in

src/ui/popup.ts:352

---

getLngLat

▸ getLngLat(): LngLat

Returns the geographical location of the popup's anchor.

The longitude of the result may differ by a multiple of 360 degrees from the longitude previously set by setLngLat because Popup wraps the anchor longitude across copies of the world to keep the popup on screen.

Returns

LngLat

The geographical location of the popup's anchor.

Defined in

src/ui/popup.ts:276

---

getMaxWidth

▸ getMaxWidth(): string

Returns the popup's maximum width.

Returns

string

The maximum width of the popup.

Defined in

src/ui/popup.ts:417

---

isOpen

▸ isOpen(): boolean

Returns

boolean

true if the popup is open, false if it is closed.

Defined in

src/ui/popup.ts:227

---

listens

▸ listens(type): boolean

Returns a true if this instance of Evented or any forwardeed instances of Evented have a listener for the specified type.

Parameters

Name	Type	Description
type	string	The event type

Returns

boolean

true if there is at least one registered listener for specified event type, false otherwise

Inherited from

Evented.listens

Defined in

src/util/evented.ts:163

---

off

▸ off(type, listener): Popup

Removes a previously registered event listener.

Parameters

Name	Type	Description
type	string	The event type to remove listeners for.
listener	Listener	The listener function to remove.

Returns

Popup

this

Inherited from

Evented.off

Defined in

src/util/evented.ts:88

---

on

▸ on(type, listener): this

Adds a listener to a specified event type.

Parameters

Name	Type	Description
type	string	The event type to add a listen for.
listener	Listener	The function to be called when the event is fired. The listener function is called with the data object passed to fire, extended with target and type properties.

Returns

this

this

Inherited from

Evented.on

Defined in

src/util/evented.ts:74

---

once

▸ once(type, listener?): Promise<any> | Popup

Adds a listener that will be called only once to a specified event type.

The listener will be called first time the event fires after the listener is registered.

Parameters

Name	Type	Description
type	string	The event type to listen for.
listener?	Listener	The function to be called when the event is fired the first time.

Returns

Promise<any> | Popup

this or a promise if a listener is not provided

Inherited from

Evented.once

Defined in

src/util/evented.ts:104

---

remove

▸ remove(): this

Removes the popup from the map it has been added to.

Returns

this

this

Example

let popup = new Popup().addTo(map);
popup.remove();

Defined in

src/ui/popup.ts:241

---

removeClassName

▸ removeClassName(className): void

Removes a CSS class from the popup container element.

Parameters

Name	Type	Description
className	string	Non-empty string with CSS class name to remove from popup container

Returns

void

Example

let popup = new Popup()
popup.removeClassName('some-class')

Defined in

src/ui/popup.ts:498

---

setDOMContent

▸ setDOMContent(htmlNode): this

Sets the popup's content to the element provided as a DOM node.

Parameters

Name	Type	Description
htmlNode	Node	A DOM node to be used as content for the popup.

Returns

this

this

Example

Create an element with the popup content

let div = document.createElement('div');
div.innerHTML = 'Hello, world!';
let popup = new Popup()
  .setLngLat(e.lngLat)
  .setDOMContent(div)
  .addTo(map);

Defined in

src/ui/popup.ts:450

---

setEventedParent

▸ setEventedParent(parent?, data?): Popup

Bubble all events fired by this instance of Evented to this parent instance of Evented.

Parameters

Name	Type
parent?	Evented
data?	any

Returns

Popup

this

Inherited from

Evented.setEventedParent

Defined in

src/util/evented.ts:175

---

setHTML

▸ setHTML(html): this

Sets the popup's content to the HTML provided as a string.

This method does not perform HTML filtering or sanitization, and must be used only with trusted content. Consider Popup#setText if the content is an untrusted text string.

Parameters

Name	Type	Description
html	string	A string representing HTML content for the popup.

Returns

this

this

Example

let popup = new Popup()
  .setLngLat(e.lngLat)
  .setHTML("<h1>Hello World!</h1>")
  .addTo(map);

See

• Display a popup
• Display a popup on hover
• Display a popup on click
• Attach a popup to a marker instance

Defined in

src/ui/popup.ts:398

---

setLngLat

▸ setLngLat(lnglat): this

Sets the geographical location of the popup's anchor, and moves the popup to it. Replaces trackPointer() behavior.

Parameters

Name	Type	Description
lnglat	LngLatLike	The geographical location to set as the popup's anchor.

Returns

this

this

Defined in

src/ui/popup.ts:286

---

setMaxWidth

▸ setMaxWidth(maxWidth): this

Sets the popup's maximum width. This is setting the CSS property max-width. Available values can be found here: https://developer.mozilla.org/en-US/docs/Web/CSS/max-width

Parameters

Name	Type	Description
maxWidth	string	A string representing the value for the maximum width.

Returns

this

this

Defined in

src/ui/popup.ts:428

---

setOffset

▸ setOffset(offset?): this

Sets the popup's offset.

Parameters

Name	Type	Description
offset?	Offset	Sets the popup's offset.

Returns

this

this

Defined in

src/ui/popup.ts:510

---

setSubpixelPositioning

▸ setSubpixelPositioning(value): void

Set the option to allow subpixel positioning of the popup by passing a boolean

Parameters

Name	Type	Description
value	boolean	When boolean is true, subpixel positioning is enabled for the popup.

Returns

void

Example

let popup = new Popup()
popup.setSubpixelPositioning(true);

Defined in

src/ui/popup.ts:546

---

setText

▸ setText(text): this

Sets the popup's content to a string of text.

This function creates a Text node in the DOM, so it cannot insert raw HTML. Use this method for security against XSS if the popup content is user-provided.

Parameters

Name	Type	Description
text	string	Textual content for the popup.

Returns

this

this

Example

let popup = new Popup()
  .setLngLat(e.lngLat)
  .setText('Hello, world!')
  .addTo(map);

Defined in

src/ui/popup.ts:373

---

toggleClassName

▸ toggleClassName(className): boolean

Add or remove the given CSS class on the popup container, depending on whether the container currently has that class.

Parameters

Name	Type	Description
className	string	Non-empty string with CSS class name to add/remove

Returns

boolean

if the class was removed return false, if class was added, then return true, undefined if there is no container

Example

let popup = new Popup()
popup.toggleClassName('toggleClass')

Defined in

src/ui/popup.ts:529

---

trackPointer

▸ trackPointer(): this

Tracks the popup anchor to the cursor position on screens with a pointer device (it will be hidden on touchscreens). Replaces the setLngLat behavior. For most use cases, set closeOnClick and closeButton to false.

Returns

this

this

Example

let popup = new Popup({ closeOnClick: false, closeButton: false })
  .setHTML("<h1>Hello World!</h1>")
  .trackPointer()
  .addTo(map);

Defined in

src/ui/popup.ts:319