从要素图层查询值为“x”的要素

Question

除了包含特定“fieldY = valueX”的功能外，我无法找到返回所有功能的方法！任何帮助将不胜感激！

Answer 1

To return all features except ones having a particular value, use something like fieldY <> valueX as in:

featureLayer.definitionExpression= "GRADE <> 'B'";

https://developers.arcgis.com/javascript/latest/api-reference/esri-layers-FeatureLayer.html#definitionExpression