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var poly; var map; function initialize() { var chicago = new google.maps.LatLng(41.879535, -87.624333); var mapOptions = { zoom: 7, center: chicago, mapTypeId: google.maps.MapTypeId.ROADMAP }; map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions); var polyOptions = { strokeColor: '#000000', strokeOpacity: 1.0, strokeWeight: 3 } poly = new google.maps.Polyline(polyOptions); poly.setMap(map); // Add a listener for the click event google.maps.event.addListener(map, 'click', addLatLng); } /** * Handles click events on a map, and adds a new point to the Polyline. * @param {google.maps.MouseEvent} event */ function addLatLng(event) { var path = poly.getPath(); // Because path is an MVCArray, we can simply append a new coordinate // and it will automatically appear path.push(event.latLng); // Add a new marker at the new plotted point on the polyline. var marker = new google.maps.Marker({ position: event.latLng, title: '#' + path.getLength(), map: map }); } google.maps.event.addDomListener(window, 'load', initialize);
<!DOCTYPE html> <html> <head> <meta name="viewport" content="initial-scale=1.0, user-scalable=no"> <meta charset="utf-8"> <title>Complex polylines</title> <link href="/maps/documentation/javascript/examples/default.css" rel="stylesheet"> <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script> <script> var poly; var map; function initialize() { var chicago = new google.maps.LatLng(41.879535, -87.624333); var mapOptions = { zoom: 7, center: chicago, mapTypeId: google.maps.MapTypeId.ROADMAP }; map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions); var polyOptions = { strokeColor: '#000000', strokeOpacity: 1.0, strokeWeight: 3 } poly = new google.maps.Polyline(polyOptions); poly.setMap(map); // Add a listener for the click event google.maps.event.addListener(map, 'click', addLatLng); } /** * Handles click events on a map, and adds a new point to the Polyline. * @param {google.maps.MouseEvent} event */ function addLatLng(event) { var path = poly.getPath(); // Because path is an MVCArray, we can simply append a new coordinate // and it will automatically appear path.push(event.latLng); // Add a new marker at the new plotted point on the polyline. var marker = new google.maps.Marker({ position: event.latLng, title: '#' + path.getLength(), map: map }); } google.maps.event.addDomListener(window, 'load', initialize); </script> </head> <body> <div id="map-canvas"></div> </body> </html>