前面提到的方式，直接添加了图例，图例是所有要素的图例，如果要添加每个要素的图例，需要使用FeatureLayer来创建地图Map：
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>legend</title> <style> html, body { width: 100%; height: 100%; margin: 0; } #rightPane { width: 20%; } #legendPane { border: solid #97DCF2 1px; } </style> <link rel="stylesheet" type="text/css" href="http://localhost/arcgis_js_api/library/3.17/3.17/dijit/themes/claro/claro.css"/> <link rel="stylesheet" type="text/css" href="http://localhost/arcgis_js_api/library/3.17/3.17/esri/css/esri.css"/> <script type="text/javascript" src="http://localhost/arcgis_js_api/library/3.17/3.17/init.js"></script> <script> require(["esri/map", "esri/layers/FeatureLayer", "esri/dijit/Legend", "dojo/_base/array", "dojo/parser", "dijit/layout/BorderContainer", "dijit/layout/ContentPane", "dijit/layout/AccordionContainer", "dojo/domReady!"], function (Map, FeatureLayer, Legend, arrayUtils, parser) { parser.parse(); var map = new Map("map", { basemap: "topo", center: [-96.53, 38.374], zoom: 13 }); var rivers = new FeatureLayer("https://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Hydrography/Watershed173811/MapServer/1", { mode: FeatureLayer.MODE_ONDEMAND, outFields: ["*"] }); var waterbodies = new FeatureLayer("https://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Hydrography/Watershed173811/MapServer/0", { mode: FeatureLayer.MODE_ONDEMAND, outField: ["*"] }); //add the legend map.on("layers-add-result", function (e) { //返回了一个数组 var layerInfo = arrayUtils.map(e.layers, function (layer, index) { // console.log(index); // console.log(layer); if(layer.layer.name === "Rivers"){ layer.layer.name = "河流"; } return {layer: layer.layer, title: layer.layer.name}; }); console.log(layerInfo); if (layerInfo.length > 0){ var legendDijit = new Legend({ map:map, layerInfos: layerInfo//这里就可以设置图层信息的图例名称啊什么的 }, "legendDiv"); legendDijit.startup(); } }); map.addLayers([waterbodies, rivers]); }); </script> </head> <body> <div id="content" data-dojo-type="dijit/layout/BorderContainer" data-dojo-props="design:'headline', gutters:true" style="width: 100%; height: 100%; margin: 0;"> <div id="rightPane" data-dojo-type="dijit/layout/ContentPane" data-dojo-props="region:'right'"> <div data-dojo-type="dijit/layout/AccordionContainer"> <div data-dojo-type="dijit/layout/ContentPane" id="legendPane" data-dojo-props="title:'Legend', selected:true"> <div id="legendDiv"></div> </div> <div data-dojo-type="dijit/layout/ContentPane" data-dojo-props="title:'Pane 2'"> This pane could contain tools or additional content </div> </div> </div> <div id="map" data-dojo-type="dijit/layout/ContentPane" data-dojo-props="region:'center'" style="overflow:hidden;"> </div> </div> </body> </html>结果图：
