要实现ArcGIS JavaScript API中过滤功能与查询功能的结合,可以按照以下步骤进行:
require([
"esri/Map",
"esri/views/MapView",
"esri/layers/FeatureLayer"
], function(Map, MapView, FeatureLayer) {
var map = new Map({
basemap: "streets"
});
var view = new MapView({
container: "viewDiv",
map: map,
center: [-118.805, 34.027],
zoom: 13
});
var featureLayer = new FeatureLayer({
url: "https://services.arcgis.com/"
});
map.add(featureLayer);
});
过滤表单
查询表单
document.getElementById("filterButton").addEventListener("click", filterFeatures);
function filterFeatures() {
var filterField = document.getElementById("filterField").value;
var filterValue = document.getElementById("filterValue").value;
featureLayer.definitionExpression = filterField + " = '" + filterValue + "'";
}
document.getElementById("queryButton").addEventListener("click", queryFeatures);
function queryFeatures() {
var queryField = document.getElementById("queryField").value;
var queryValue = document.getElementById("queryValue").value;
var query = featureLayer.createQuery();
query.where = queryField + " = '" + queryValue + "'";
featureLayer.queryFeatures(query).then(function(response) {
// 处理查询结果
console.log(response.features);
});
}
以上代码示例演示了如何通过过滤表单和查询表单来执行过滤和查询操作。你可以根据自己的需求修改字段和元素的名称以及其他相关代码,以适应你的应用程序。