Created
January 24, 2018 23:51
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Create a hover effect // source https://jsbin.com/cuvoper
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset='utf-8' /> | |
| <title>Create a hover effect</title> | |
| <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' /> | |
| <script src='https://www.alantgeo.com.au/share/mapbox-gl.js'></script> | |
| <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.43.0/mapbox-gl.css' rel='stylesheet' /> | |
| <style> | |
| body { margin:0; padding:0; } | |
| #map { position:absolute; top:0; bottom:0; width:100%; } | |
| </style> | |
| </head> | |
| <body> | |
| <div id='map'></div> | |
| <script> | |
| mapboxgl.accessToken = 'pk.eyJ1IjoiYWxhbnRnZW8tcHJlc2FsZXMiLCJhIjoiNkRKcXdVdyJ9.XVLiu2tRo5f2P__oBfdqsw'; | |
| var map = new mapboxgl.Map({ | |
| container: 'map', | |
| style: 'mapbox://styles/mapbox/streets-v9', | |
| center: [-100.486052, 37.830348], | |
| zoom: 2 | |
| }); | |
| map.on('load', function () { | |
| map.addSource("states", { | |
| "type": "geojson", | |
| "data": "https://d2ad6b4ur7yvpq.cloudfront.net/naturalearth-3.3.0/ne_110m_admin_1_states_provinces.geojson" | |
| }); | |
| map.addLayer({ | |
| "id": "state-fills", | |
| "type": "fill", | |
| "source": "states", | |
| "layout": {}, | |
| "paint": { | |
| "fill-color": "#627BC1", | |
| "fill-opacity": 0.5 | |
| } | |
| }); | |
| map.addLayer({ | |
| "id": "state-borders", | |
| "type": "line", | |
| "source": "states", | |
| "layout": {}, | |
| "paint": { | |
| "line-color": "#627BC1", | |
| "line-width": 2 | |
| } | |
| }); | |
| // When the user moves their mouse over the states-fill layer, we'll update the filter in | |
| // the state-fills-hover layer to only show the matching state, thus making a hover effect. | |
| map.on("mousemove", "state-fills", function(e) { | |
| map.setPaintProperty("state-fills", 'fill-opacity', ["case", ["==", ["get", "name"], e.features[0].properties.name], 0.8, 0.5]); | |
| }); | |
| // Reset the state-fills-hover layer's filter when the mouse leaves the layer. | |
| map.on("mouseleave", "state-fills", function() { | |
| map.setPaintProperty("state-fills", 'fill-opacity', 0.5); | |
| }); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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