Supermap uses javascript to mark points on the map. when clicked, a window is displayed.

------- Add a tag on the map. The pop-up window displays the corresponding information. ------ FunctionaddFeature (arr) {Add the element varmarker; for (j0; j & lt; arrlength; j ++) {var ------- to add a flag to the map, click mark. The pop-up window displays the corresponding information. ------ Function addFeature (arr) {// Add the element var marker to the display tag layer; for (j = 0; j // var f = vectorLayer. features [j]; var point = new SuperMap. geometry. point (arr [j] ["site longitude"], arr [j] ["site latitude"]), size = new SuperMap. size (44, 33), offset = new SuperMap. pixel (-(size. w/2),-size. h), icon = new SuperMap. icon ("resource/controlImages/marker.png", size, offset); marker = new SuperMap. marker (new SuperMap. lonLat (point. x, po Int. y), icon); marker. m_RAINSTATION = arr [j]; marker. events. on ({// Method for registering a click event "click": openInfoWin, "scope": marker}); markerLayer. addMarker (marker) ;}}// the pop-up window var infowin = null; function openInfoWin () {// open the form closeInfoWin (); // close the previously opened window. Var marker = this; var lonlat = marker. lonlat; var rainObj = marker. m_RAINSTATION; var contentHTML = ""; contentHTML + = "" + "Site No.:" + rainObj ["Site No."] +"
Site name: "+ rainObj [" site name "] +"
Rainfall: "+ rainObj [" real-time rain "] +"
Time: "+ rainObj [" Update Time "] +"
Site latitude: "+ rainObj [" site latitude "] +"
Site longitude: "+ rainObj [" site longitude "] +"
Unit: "+ rainObj [" unit "] +" "; var size = new SuperMap. size (0, 33); var offset = new SuperMap. pixel (0,-size. h); var icon = new SuperMap. icon ("resource/controlImages/marker.png", size, offset); var popup = new SuperMap. popup. framedCloud ("popwin", new SuperMap. lonLat (lonlat. lon, lonlat. lat), null, contentHTML, icon, true); infowin = popup; map. addPopup (popup);} function closeInfoWin () {// close the window if (infowin) {try {infowin. hide (); // hide the form object infowin. destroy (); // destroy the form object} catch (e ){}}}