googlemaps-samples · willum070 · Feb 12, 2026 · Feb 17, 2026 · Feb 17, 2026
diff --git a/samples/polyline-simple/README.md b/samples/polyline-simple/README.md
@@ -0,0 +1,41 @@
+# Google Maps JavaScript Sample
+
+## polyline-simple
+
+This example creates a two-pixel-wide red polyline that shows the path of the first trans-Pacific flight between Oakland, CA, and Brisbane, Australia.
+
+## Setup
+
+### Before starting run:
+
+`npm i`
+
+### Run an example on a local web server
+
+`cd samples/polyline-simple`
+`npm start`
+
+### Build an individual example
+
+`cd samples/polyline-simple`
+`npm run build`
+
+From 'samples':
+
+`npm run build --workspace=polyline-simple/`
+
+### Build all of the examples.
+
+From 'samples':
+
+`npm run build-all`
+
+### Run lint to check for problems
+
+`cd samples/polyline-simple`
+`npx eslint index.ts` 
+
+## Feedback
+
+For feedback related to this sample, please open a new issue on
+[GitHub](https://github.com/googlemaps-samples/js-api-samples/issues).
diff --git a/samples/polyline-simple/index.html b/samples/polyline-simple/index.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<!--
+ @license
+ Copyright 2026 Google LLC. All Rights Reserved.
+ SPDX-License-Identifier: Apache-2.0
+-->
+<!-- [START maps_polyline_simple] -->
+<html>
+    <head>
+        <title>Simple Polylines</title>
+
+        <link rel="stylesheet" type="text/css" href="./style.css" />
+        <script type="module" src="./index.js"></script>
+        <!-- prettier-ignore -->
+        <script>(g=>{var h,a,k,p="The Google Maps JavaScript API",c="google",l="importLibrary",q="__ib__",m=document,b=window;b=b[c]||(b[c]={});var d=b.maps||(b.maps={}),r=new Set,e=new URLSearchParams,u=()=>h||(h=new Promise(async(f,n)=>{await (a=m.createElement("script"));e.set("libraries",[...r]+"");for(k in g)e.set(k.replace(/[A-Z]/g,t=>"_"+t[0].toLowerCase()),g[k]);e.set("callback",c+".maps."+q);a.src=`https://maps.${c}apis.com/maps/api/js?`+e;d[q]=f;a.onerror=()=>h=n(Error(p+" could not load."));a.nonce=m.querySelector("script[nonce]")?.nonce||"";m.head.append(a)}));d[l]?console.warn(p+" only loads once. Ignoring:",g):d[l]=(f,...n)=>r.add(f)&&u().then(()=>d[l](f,...n))})
+        ({key: "AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8", v: "weekly"});</script>
+    </head>
+    <body>
+        <gmp-map center="0, -180" zoom="3" map-type-id="terrain"> </gmp-map>
+    </body>
+</html>
+<!-- [END maps_polyline_simple] -->
diff --git a/samples/polyline-simple/index.ts b/samples/polyline-simple/index.ts
@@ -0,0 +1,36 @@
+/**
+ * @license
+ * Copyright 2026 Google LLC. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+// [START maps_polyline_simple]
+// This example creates a 2-pixel-wide red polyline showing the path of
+// the first trans-Pacific flight between Oakland, CA, and Brisbane,
+// Australia which was made by Charles Kingsford Smith.
+const mapElement = document.querySelector('gmp-map') as google.maps.MapElement;
+let innerMap;
+
+async function initMap() {
+    (await google.maps.importLibrary('maps')) as google.maps.MapsLibrary;
+    innerMap = mapElement.innerMap;
+
+    const flightPlanCoordinates = [
+        { lat: 37.772, lng: -122.214 },
+        { lat: 21.291, lng: -157.821 },
+        { lat: -18.142, lng: 178.431 },
+        { lat: -27.467, lng: 153.027 },
+    ];
+    const flightPath = new google.maps.Polyline({
+        path: flightPlanCoordinates,
+        geodesic: true,
+        strokeColor: '#FF0000',
+        strokeOpacity: 1.0,
+        strokeWeight: 2,
+    });
+
+    flightPath.setMap(innerMap);
+}
+
+initMap();
+// [END maps_polyline_simple]
diff --git a/samples/polyline-simple/package.json b/samples/polyline-simple/package.json
@@ -0,0 +1,14 @@
+{
+  "name": "@js-api-samples/polyline-simple",
+  "version": "1.0.0",
+  "scripts": {
+    "build": "tsc && bash ../jsfiddle.sh polyline-simple && bash ../app.sh polyline-simple && bash ../docs.sh polyline-simple && npm run build:vite --workspace=. && bash ../dist.sh polyline-simple",
+    "test": "tsc && npm run build:vite --workspace=.",
+    "start": "tsc && vite build --base './' && vite",
+    "build:vite": "vite build --base './'",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+
+  }
+}
diff --git a/samples/polyline-simple/style.css b/samples/polyline-simple/style.css
@@ -0,0 +1,18 @@
+/**
+ * @license
+ * Copyright 2026 Google LLC. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/* [START maps_polyline_simple] */
+/* 
+ * Optional: Makes the sample page fill the window. 
+ */
+html,
+body {
+    height: 100%;
+    margin: 0;
+    padding: 0;
+}
+
+/* [END maps_polyline_simple] */
diff --git a/samples/polyline-simple/tsconfig.json b/samples/polyline-simple/tsconfig.json
@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "module": "esnext",
+    "target": "esnext",
+    "strict": true,
+    "noImplicitAny": false,
+    "lib": [
+      "es2015",
+      "esnext",
+      "es6",
+      "dom",
+      "dom.iterable"
+    ],
+    "moduleResolution": "Node",
+    "jsx": "preserve"
+  }
+}