Google Maps API 以某一经纬度为中心,以某一长度位半径画圆 Draw the radius of a circle


<!DOCTYPE html>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title> - jsFiddle demo</title>
<script type='text/javascript' src=""></script>
<script type='text/javascript'>

        var map;
        var latlng = new google.maps.LatLng(-34.397, 150.644);
        function initialize() 
            var mapOptions = {
                center: latlng,
                zoom: 9,
                mapTypeId: google.maps.MapTypeId.ROADMAP
            var el=document.getElementById("map_canvas");
            map = new google.maps.Map(el, mapOptions);
            var marker = new google.maps.Marker({
                map: map,
                position: latlng
            var sunCircle = {
                strokeColor: "#c3fc49",
                strokeOpacity: 0.8,
                strokeWeight: 2,
                fillColor: "#c3fc49",
                fillOpacity: 0.35,
                map: map,
                center: latlng,
                radius: 15000 // in meters
            cityCircle = new google.maps.Circle(sunCircle);
            cityCircle.bindTo('center', marker, 'position');



    <div id="map_canvas" style="width:400px;height:400px;"></div>





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原文:Google Maps API 以某一经纬度为中心,以某一长度位半径画圆 Draw the radius of a circle


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