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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.

TypeScript

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

let flightPath: google.maps.Polyline;
let map: google.maps.Map;

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

  const flightPathCoordinates: google.maps.LatLngLiteral[] = [
    { 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);
}

JavaScript

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

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

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

      function initMap() {
        map = new google.maps.Map(document.getElementById("map"), {
          zoom: 3,
          center: {
            lat: 0,
            lng: -180
          },
          mapTypeId: "terrain"
        });
        const 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);
      }
    </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>
"use strict"; // This example adds a UI control allowing users to remove the polyline from the // map. let flightPath; let map; function initMap() { map = new google.maps.Map(document.getElementById("map"), { zoom: 3, center: { lat: 0, lng: -180 }, mapTypeId: "terrain" }); const 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); }
/* 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=AIzaSyCb1xprYSpXd0q_yDsJ1W2UGhfl9_YGKU0&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>