javascript - openlayer vectorSource error with json data - 


var vectorsource = new ol.source.vector({    projection: 'epsg:4326' });   var vectorlayer = new ol.layer.vector({    source: vectorsource });  var map = new ol.map({     target: 'mapdiv',     renderer: 'canvas',     layers: [new ol.layer.tile({source: new ol.source.osm()}),vectorlayer],     view: new ol.view({         center: ol.proj.transform([2.1833, 41.3833], 'epsg:4326', 'epsg:3857'),         zoom: 2     }) });  var sessiondata = {"4798":{"location":[{"lat":27.714622020721,"lng":85.31263589859}]},"5873":{"location":[{"lat":59.944732189178,"lng":17.821261882782}]}};  createmarkers(sessiondata);//this function has issues  //this function has no issue function addfeatures() {     var i, lat, lon, geom, feature, features = [];     for(i=0; i< 10; i++) {          lat = math.random() * 174 - 87;          lon = math.random() * 360 - 180;           geom = new ol.geom.point(ol.proj.transform([lon,lat], 'epsg:4326', 'epsg:3857'));          feature = new ol.feature(geom);          features.push(feature);                         }        vectorsource.addfeatures(features);                 }  //this function show error function createmarkers(sessdata) {     var geom, feature, features = [];      $.each(sessdata,function(key,val) {                  var locations = val.location;         if(location.length == 0) {             return true;         }          $.each(locations,function(index,value) {             if(value.lng == 0 || value.lat == 0) {                 return;             }             geom = new ol.geom.point(ol.proj.transform([value.lng,value.lat], 'epsg:4326', 'epsg:3857'));                                feature = new ol.feature(geom);             features.push(feature);         });     });     vectorsource.addfeature(features); }

addfeatures , createmarkers function has similar codes. addfeatures function has no issues when createmarkers function called, shows error "uncaught typeerror: a.addeventlistener not function" @ line "vectorsource.addfeature(features)"

fixed adding (s) @ end of addfeature. addfeatures instead of addfeature.


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