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(ArcGIS API for JavaScript 4.x) Sample of applying a definition expression on a feature layer using a drop-down.
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no"> | |
| <title>Feature Layer</title> | |
| <!-- <link rel="stylesheet" href="https://js.arcgis.com/4.10/esri/css/main.css"> --> | |
| <link rel="stylesheet" href="https://js.arcgis.com/4.10/esri/themes/dark-blue/main.css"> | |
| <link rel="stylesheet" href="indexstylesheet.css"> | |
| <script src="https://js.arcgis.com/4.10/"></script> | |
| </head> | |
| <body> | |
| <div id="viewDiv"></div> | |
| <div id="stateFilter"> | |
| <select id="state"> | |
| <option value="Default">Default</option> | |
| <option value="California">California</option> | |
| </select> | |
| </div> | |
| </body> | |
| <script src="index.js"></script> | |
| </html> |
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| require([ | |
| "esri/Map", | |
| "esri/views/MapView", | |
| "esri/layers/FeatureLayer", | |
| "dojo/domReady!" | |
| ], | |
| function (Map, MapView, FeatureLayer) { | |
| const filter = document.getElementById('state'); | |
| //Create a new map and set the basemap to Dark gray | |
| var map = new Map({ | |
| basemap: "dark-gray", | |
| //layers: [featureLayer] | |
| }); | |
| //set a new view and set the properties of the view | |
| var view = new MapView({ | |
| container: "viewDiv", | |
| map: map, | |
| center: [-86.049, 38.485], | |
| zoom: 3 | |
| }); | |
| const layer = new FeatureLayer({ | |
| url: "http://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer/2" | |
| }); | |
| map.add(layer); | |
| layer.when(function(e){ | |
| //Apply a definition expression on event change | |
| filter.addEventListener('change',function(e) { | |
| layer.definitionExpression = "state_name = 'California'"; | |
| console.log(layer.definitionExpression); | |
| }); | |
| }); | |
| }); |
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