I am adding a markers layer called layer1 like this to map
function drawPoints(mapInfo) { layer1 = new esri.layers.GraphicsLayer(); for (var i = 0; i < mapInfo.length; i++) { var projects = mapInfo; var project = new esri.geometry.Point(projects.Longitude, projects.Latitude); project = esri.geometry.geographicToWebMercator(project); var symbol = new esri.symbol.PictureMarkerSymbol("img/map/marker.png", 18, 18); projectInfoTemplate = new InfoTemplate(); projectInfoTemplate.setTitle("Project Details"); projectInfoTemplate.setContent('
'); var projectsG = new esri.Graphic(project, symbol).setInfoTemplate(projectInfoTemplate); layer1.add(projectsG); } map.addLayer(layer1); }now in next request I need to clear map so I used the
map.removeLayer(layer1);but this is causing error because the layer1 still not created at first request. Now I need to check IF the map has a layer called layer1 then removeit. Here is a pseudo code of what I need to do:
if(map.has/contains/include(layer1){ map.removeLayer(layer1);}can you please let me know how to do that?
أكثر...
function drawPoints(mapInfo) { layer1 = new esri.layers.GraphicsLayer(); for (var i = 0; i < mapInfo.length; i++) { var projects = mapInfo; var project = new esri.geometry.Point(projects.Longitude, projects.Latitude); project = esri.geometry.geographicToWebMercator(project); var symbol = new esri.symbol.PictureMarkerSymbol("img/map/marker.png", 18, 18); projectInfoTemplate = new InfoTemplate(); projectInfoTemplate.setTitle("Project Details"); projectInfoTemplate.setContent('
'); var projectsG = new esri.Graphic(project, symbol).setInfoTemplate(projectInfoTemplate); layer1.add(projectsG); } map.addLayer(layer1); }now in next request I need to clear map so I used the
map.removeLayer(layer1);but this is causing error because the layer1 still not created at first request. Now I need to check IF the map has a layer called layer1 then removeit. Here is a pseudo code of what I need to do:
if(map.has/contains/include(layer1){ map.removeLayer(layer1);}can you please let me know how to do that?
أكثر...