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@carto/zera

v1.0.7

Published

Grid json client for `Leaflet` and `Google Maps`.

Downloads

304

Readme

zera

Grid json client for Leaflet and Google Maps.

Installing zera

yarn add @carto/zera

Testing

zera uses jest for executing the unit tests located under the __test__ folder and karma with headless chrome for running the tests located under the test folder.

By default you need to be able to run headless chrome on your machine. But you can also edit the karma.config.js file and change the browser.

Running the thests

yarn test

Building

zera uses webpack to generate an umd bundle located under the dist folder.

yarn build

api

new zera.Interactive([map], [gridUrl])

Creates a new zera object.

map is a reference to the native google|leaflet map and gridUrl is a string pointing to the grid.json url server.

const map = L.map('map').setView([42, -0.08], 5);
const gridUrl = 'https://carto.com/map_id/1/{z}/{x}/{y}.grid.json';
const interactivity = new zera.Interactive(map, '');

zera.on(event, callback)

Attaches event listeners to map events. Only a single listener can be attached for every event type. There are only three possible events:

  • on: Fired when the user clicks or moves the mouse over a feature. You can distinguish between them using event.type property.
  • off: Fired when the user clicks or moves the mouse off from a feature.
  • error Fired when there was an error getting the grid.json for a interaction.
    • This includes CARTO-429 limit error.
zera.on('on', event => {
    popup.setLatLng(event.latlng);
    popup.setContent(`<h5>${event.data.name}</h5> <h6> ${event.type} </h6>`);
    popup.openOn(map);
})

zera.off(event)

Removes an event listener.

zera.off('on');

zera.remove()

Removes all the interactivity and callbacks.

zera.remove();