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Removing Polylines

This example adds a UI control that allows the user to remove the polyline from the map.

Read the documentation.

JavaScript

// This example adds a UI control allowing users to remove the polyline from the
// map.

var flightPath;
var map;

function initMap() {
  map = new google.maps.Map(document.getElementById("map"), {
    zoom: 3,
    center: { lat: 0, lng: -180 },
    mapTypeId: "terrain"
  });

  var flightPathCoordinates = [
    { lat: 37.772, lng: -122.214 },
    { lat: 21.291, lng: -157.821 },
    { lat: -18.142, lng: 178.431 },
    { lat: -27.467, lng: 153.027 }
  ];

  flightPath = new google.maps.Polyline({
    path: flightPathCoordinates,
    strokeColor: "#FF0000",
    strokeOpacity: 1.0,
    strokeWeight: 2
  });

  addLine();
}

function addLine() {
  flightPath.setMap(map);
}

function removeLine() {
  flightPath.setMap(null);
}

CSS

/* Always set the map height explicitly to define the size of the div
       * element that contains the map. */
#map {
  height: 100%;
}

/* Optional: Makes the sample page fill the window. */
html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

#floating-panel {
  position: absolute;
  top: 10px;
  left: 25%;
  z-index: 5;
  background-color: #fff;
  padding: 5px;
  border: 1px solid #999;
  text-align: center;
  font-family: "Roboto", "sans-serif";
  line-height: 30px;
  padding-left: 10px;
}

HTML

<!DOCTYPE html>
<html>
  <head>
    <title>Removing Polylines</title>
    <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>
    <script
      src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap&libraries=&v=weekly"
      defer
    ></script>
    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script src="./app.js"></script>
  </head>
  <body>
    <div id="floating-panel">
      <input onclick="removeLine();" type="button" value="Remove line" />
      <input onclick="addLine();" type="button" value="Restore line" />
    </div>
    <div id="map"></div>
  </body>
</html>

All

<!DOCTYPE html>
<html>
  <head>
    <title>Removing Polylines</title>
    <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>
    <script
      src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap&libraries=&v=weekly"
      defer
    ></script>
    <style type="text/css">
      /* Always set the map height explicitly to define the size of the div
       * element that contains the map. */
      #map {
        height: 100%;
      }

      /* Optional: Makes the sample page fill the window. */
      html,
      body {
        height: 100%;
        margin: 0;
        padding: 0;
      }

      #floating-panel {
        position: absolute;
        top: 10px;
        left: 25%;
        z-index: 5;
        background-color: #fff;
        padding: 5px;
        border: 1px solid #999;
        text-align: center;
        font-family: "Roboto", "sans-serif";
        line-height: 30px;
        padding-left: 10px;
      }
    </style>
    <script>
      (function(exports) {
        "use strict";

        // This example adds a UI control allowing users to remove the polyline from the
        // map.

        function initMap() {
          exports.map = new google.maps.Map(document.getElementById("map"), {
            zoom: 3,
            center: {
              lat: 0,
              lng: -180
            },
            mapTypeId: "terrain"
          });
          var flightPathCoordinates = [
            {
              lat: 37.772,
              lng: -122.214
            },
            {
              lat: 21.291,
              lng: -157.821
            },
            {
              lat: -18.142,
              lng: 178.431
            },
            {
              lat: -27.467,
              lng: 153.027
            }
          ];
          exports.flightPath = new google.maps.Polyline({
            path: flightPathCoordinates,
            strokeColor: "#FF0000",
            strokeOpacity: 1.0,
            strokeWeight: 2
          });
          addLine();
        }

        function addLine() {
          exports.flightPath.setMap(exports.map);
        }

        function removeLine() {
          exports.flightPath.setMap(null);
        }

        exports.addLine = addLine;
        exports.initMap = initMap;
        exports.removeLine = removeLine;
      })((this.window = this.window || {}));
    </script>
  </head>
  <body>
    <div id="floating-panel">
      <input onclick="removeLine();" type="button" value="Remove line" />
      <input onclick="addLine();" type="button" value="Restore line" />
    </div>
    <div id="map"></div>
  </body>
</html>
(function(exports) { "use strict"; // This example adds a UI control allowing users to remove the polyline from the // map. function initMap() { exports.map = new google.maps.Map(document.getElementById("map"), { zoom: 3, center: { lat: 0, lng: -180 }, mapTypeId: "terrain" }); var flightPathCoordinates = [ { lat: 37.772, lng: -122.214 }, { lat: 21.291, lng: -157.821 }, { lat: -18.142, lng: 178.431 }, { lat: -27.467, lng: 153.027 } ]; exports.flightPath = new google.maps.Polyline({ path: flightPathCoordinates, strokeColor: "#FF0000", strokeOpacity: 1.0, strokeWeight: 2 }); addLine(); } function addLine() { exports.flightPath.setMap(exports.map); } function removeLine() { exports.flightPath.setMap(null); } exports.addLine = addLine; exports.initMap = initMap; exports.removeLine = removeLine; })((this.window = this.window || {}));
/* Always set the map height explicitly to define the size of the div * element that contains the map. */ #map { height: 100%; } /* Optional: Makes the sample page fill the window. */ html, body { height: 100%; margin: 0; padding: 0; } #floating-panel { position: absolute; top: 10px; left: 25%; z-index: 5; background-color: #fff; padding: 5px; border: 1px solid #999; text-align: center; font-family: "Roboto", "sans-serif"; line-height: 30px; padding-left: 10px; }
<!DOCTYPE html> <html> <head> <title>Removing Polylines</title> <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script> <script src="https://maps.googleapis.com/maps/api/js?key=&callback=initMap&libraries=&v=weekly" defer ></script> <!-- jsFiddle will insert css and js --> </head> <body> <div id="floating-panel"> <input onclick="removeLine();" type="button" value="Remove line" /> <input onclick="addLine();" type="button" value="Restore line" /> </div> <div id="map"></div> </body> </html>