获取map中某一层所有特征的数据

Question

So I'm building a project where I'm displaying a map with different layers on top of it. When I click on a specific polygon on a layer, I get the data of that polygon (basically the attributes table) using the getFeatureInfoUrl() method and I display it by simply running a for loop. Now I want to get the data of all the polygons on that layer. Is there a method to do that or am I just supposed to use the getFeatureInfoUrl() method? I'm getting the data from a GeoServer and using the OpenLayers library.

var url = this.wmsSource.getFeatureInfoUrl(
        evt.coordinate,
        viewResolution,
        'EPSG:3857',
        {'INFO_FORMAT': 'text/html'}
      );

This is the code for a specific polygon, and it just returns one feature. But this works for one specific coordinate only so I'm not sure how to move forward with this. I could try the FEATURE_COUNT: 1, option but then I would have to specify manually how many features are there and it would still require me to click on the map. Want to get the data without clicking on the map.

Answer 1

 vectorLayer.getSource()?.on('addfeature', function(evt:any){ debugger var feature=evt.feature; })

you can get all feature from this code. I hope this is helpful for you.