I have a feature layer connected to a WAB map, with the following fields * OBJECTID ( type: esriFieldTypeOID , alias: OBJECTID ) * LINE ( type: esriFieldTypeInteger , alias: LINE ) * ROUTE ( type: esriFieldTypeInteger , alias: ROUTE ) * SHAPE ( type: esriFieldTypeGeometry , alias: SHAPE ) * SHAPE.STLength() ( type: esriFieldTypeDouble , alias: SHAPE.STLength() ) Utilizing the Feature Layer Object, is there any simple way to get a list of the field names? I'd rather not run a Query, but if I have to what is best way to only return 1 record with those field names? Thank you for your time

Joe, Are you waiting for the FeatureLayer to load before you are checking the fields? centerlineFeatureLayer . on ( "load" , function ( ) { console . info ( centerlineFeatureLayer . fields ) ; } ) ;

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How to get the column names of a feature layer with JSAPI

JoeMinicucci

I have a feature layer connected to a WAB map, with the following fields

OBJECTID ( type: esriFieldTypeOID , alias: OBJECTID )
LINE ( type: esriFieldTypeInteger , alias: LINE )
ROUTE ( type: esriFieldTypeInteger , alias: ROUTE )
SHAPE ( type: esriFieldTypeGeometry , alias: SHAPE )
SHAPE.STLength() ( type: esriFieldTypeDouble , alias: SHAPE.STLength() )

Utilizing the Feature Layer Object, is there any simple way to get a list of the field names? I'd rather not run a Query, but if I have to what is best way to only return 1 record with those field names?

Thank you for your time

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Accepted answers

RobertScheitlin__GISP

Joe,

Are you waiting for the FeatureLayer to load before you are checking the fields?

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RobertScheitlin__GISP

Don't forget to mark this question as answered by clicking on the "Correct Answer" link on the reply that answered your question.

JoeMinicucci

Robert, thank you so much. This saved me hours of frustration and produced the intended result!

RobertScheitlin__GISP

Joe,

Are you waiting for the FeatureLayer to load before you are checking the fields?

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&nbsp;&nbsp;&nbsp; console<SPAN class="punctuation token">.</SPAN><SPAN class="token function">info</SPAN><SPAN class="punctuation token">(</SPAN>centerlineFeatureLayer<SPAN class="punctuation token">.</SPAN>fields<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
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JoeMinicucci

I tried accessing that object, Fields is null.. here is the logic (I confirmed the selectedCenterlineUrl is corrrect):

var selectedCenterlineUrl = this.HierarchyTableCenterlineSelect[this.HierarchyTableCenterlineSelect.selectedIndex].value;
var centerlineFeatureLayer = new FeatureLayer(selectedCenterlineUrl);

centerlineFeatureLayer gets created but fields is null..Why?

RobertScheitlin__GISP

Joe,

A FeatureLayer has a fields property:

FeatureLayer (legacy) | API Reference | ArcGIS API for JavaScript 3.18 | fields

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