topic Re: How to get fields of Dynamic Layer hosted by ArcGIS Server? in ArcGIS JavaScript Maps SDK Questions https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/how-to-get-fields-of-dynamic-layer-hosted-by/m-p/1535329#M85605 <P>You can create a <A href="https://developers.arcgis.com/javascript/latest/api-reference/esri-layers-FeatureLayer.html" target="_self">FeatureLayer</A> object from the REST endpoint URL, and get the information from its <A href="https://developers.arcgis.com/javascript/latest/api-reference/esri-layers-FeatureLayer.html#fields" target="_self">fields</A> collection after it loads:</P><LI-CODE lang="javascript">const featureLayer = new FeatureLayer({ url: "https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/Landscape_Trees/FeatureServer/0" }); featureLayer.when(function() { featureLayer.fields.forEach(function(field) { console.info(field.name + " ( type: " + field.type + ", alias: " + field.alias + " )"); }); }); featureLayer.load();</LI-CODE><P>&nbsp;</P> Wed, 04 Sep 2024 22:44:39 GMT JoelBennett 2024-09-04T22:44:39Z How to get fields of Dynamic Layer hosted by ArcGIS Server? https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/how-to-get-fields-of-dynamic-layer-hosted-by/m-p/1535300#M85604 <P>How to get fields of Dynamic Layer hosted by ArcGIS Server using JavaScript?</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ForrestLin_0-1725483838327.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/114310i9CE4694341EE3D63/image-size/medium?v=v2&amp;px=400" role="button" title="ForrestLin_0-1725483838327.png" alt="ForrestLin_0-1725483838327.png" /></span></P><P>&nbsp;</P> Wed, 04 Sep 2024 21:04:04 GMT https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/how-to-get-fields-of-dynamic-layer-hosted-by/m-p/1535300#M85604 ForrestLin 2024-09-04T21:04:04Z Re: How to get fields of Dynamic Layer hosted by ArcGIS Server? https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/how-to-get-fields-of-dynamic-layer-hosted-by/m-p/1535329#M85605 <P>You can create a <A href="https://developers.arcgis.com/javascript/latest/api-reference/esri-layers-FeatureLayer.html" target="_self">FeatureLayer</A> object from the REST endpoint URL, and get the information from its <A href="https://developers.arcgis.com/javascript/latest/api-reference/esri-layers-FeatureLayer.html#fields" target="_self">fields</A> collection after it loads:</P><LI-CODE lang="javascript">const featureLayer = new FeatureLayer({ url: "https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/Landscape_Trees/FeatureServer/0" }); featureLayer.when(function() { featureLayer.fields.forEach(function(field) { console.info(field.name + " ( type: " + field.type + ", alias: " + field.alias + " )"); }); }); featureLayer.load();</LI-CODE><P>&nbsp;</P> Wed, 04 Sep 2024 22:44:39 GMT https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/how-to-get-fields-of-dynamic-layer-hosted-by/m-p/1535329#M85605 JoelBennett 2024-09-04T22:44:39Z Re: How to get fields of Dynamic Layer hosted by ArcGIS Server? https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/how-to-get-fields-of-dynamic-layer-hosted-by/m-p/1535434#M85608 <P><a href="https://community.esri.com/t5/user/viewprofilepage/user-id/6522">@JoelBennett</a>&nbsp;</P><P>Thanks.</P> Thu, 05 Sep 2024 11:46:31 GMT https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/how-to-get-fields-of-dynamic-layer-hosted-by/m-p/1535434#M85608 ForrestLin 2024-09-05T11:46:31Z Re: How to get fields of Dynamic Layer hosted by ArcGIS Server? https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/how-to-get-fields-of-dynamic-layer-hosted-by/m-p/1535872#M85617 <DIV><SPAN>&nbsp; </SPAN><SPAN>public</SPAN> <SPAN>loadFields</SPAN><SPAN>(url: string): </SPAN><SPAN>Promise</SPAN><SPAN>&lt;Field[]</SPAN><SPAN>&gt; {</SPAN></DIV><DIV><SPAN>&nbsp; &nbsp; </SPAN><SPAN>const</SPAN> <SPAN>featureLayer</SPAN> <SPAN>=</SPAN> <SPAN>new</SPAN> <SPAN>FeatureLayer</SPAN><SPAN>({ </SPAN><SPAN>url</SPAN><SPAN> });</SPAN></DIV><DIV><SPAN>&nbsp; &nbsp; </SPAN><SPAN>return</SPAN> <SPAN>featureLayer</SPAN><SPAN>.</SPAN><SPAN>load</SPAN><SPAN>().</SPAN><SPAN>then</SPAN><SPAN>((</SPAN><SPAN>layer</SPAN><SPAN>: </SPAN><SPAN>FeatureLayer</SPAN><SPAN>) </SPAN><SPAN>=&gt;</SPAN><SPAN> {</SPAN></DIV><DIV><SPAN>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return&nbsp;</SPAN><SPAN>layer</SPAN><SPAN>.</SPAN><SPAN>fields</SPAN><SPAN>;</SPAN></DIV><DIV><SPAN>&nbsp; &nbsp; &nbsp; });</SPAN></DIV><DIV><SPAN>&nbsp; }</SPAN></DIV> Fri, 06 Sep 2024 12:12:29 GMT https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/how-to-get-fields-of-dynamic-layer-hosted-by/m-p/1535872#M85617 ForrestLin 2024-09-06T12:12:29Z