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  1. Products
  2. Workers
  3. Examples
  4. Geolocation: Hello World

Geolocation: Hello World

Try in Workers Playground
Get all geolocation data fields and display them in HTML.
 Run Worker
export default {
  async fetch(request) {
    let html_content = "";
    let html_style =
      "body{padding:6em; font-family: sans-serif;} h1{color:#f6821f;}";


    html_content += "<p> Colo: " + request.cf.colo + "</p>";
    html_content += "<p> Country: " + request.cf.country + "</p>";
    html_content += "<p> City: " + request.cf.city + "</p>";
    html_content += "<p> Continent: " + request.cf.continent + "</p>";
    html_content += "<p> Latitude: " + request.cf.latitude + "</p>";
    html_content += "<p> Longitude: " + request.cf.longitude + "</p>";
    html_content += "<p> PostalCode: " + request.cf.postalCode + "</p>";
    html_content += "<p> MetroCode: " + request.cf.metroCode + "</p>";
    html_content += "<p> Region: " + request.cf.region + "</p>";
    html_content += "<p> RegionCode: " + request.cf.regionCode + "</p>";
    html_content += "<p> Timezone: " + request.cf.timezone + "</p>";


    let html = `<!DOCTYPE html>
      <head>
        <title> Geolocation: Hello World </title>
        <style> ${html_style} </style>
      </head>
      <body>
        <h1>Geolocation: Hello World!</h1>
        <p>You now have access to geolocation data about where your user is visiting from.</p>
        ${html_content}
      </body>`;


    return new Response(html, {
      headers: {
        "content-type": "text/html;charset=UTF-8",
      },
    });
  },

};

export default {
  async fetch(request): Promise<Response> {
    let html_content = "";
    let html_style =
      "body{padding:6em; font-family: sans-serif;} h1{color:#f6821f;}";


    html_content += "<p> Colo: " + request.cf.colo + "</p>";
    html_content += "<p> Country: " + request.cf.country + "</p>";
    html_content += "<p> City: " + request.cf.city + "</p>";
    html_content += "<p> Continent: " + request.cf.continent + "</p>";
    html_content += "<p> Latitude: " + request.cf.latitude + "</p>";
    html_content += "<p> Longitude: " + request.cf.longitude + "</p>";
    html_content += "<p> PostalCode: " + request.cf.postalCode + "</p>";
    html_content += "<p> MetroCode: " + request.cf.metroCode + "</p>";
    html_content += "<p> Region: " + request.cf.region + "</p>";
    html_content += "<p> RegionCode: " + request.cf.regionCode + "</p>";
    html_content += "<p> Timezone: " + request.cf.timezone + "</p>";


    let html = `<!DOCTYPE html>
      <head>
        <title> Geolocation: Hello World </title>
        <style> ${html_style} </style>
      </head>
      <body>
        <h1>Geolocation: Hello World!</h1>
        <p>You now have access to geolocation data about where your user is visiting from.</p>
        ${html_content}
      </body>`;


    return new Response(html, {
      headers: {
        "content-type": "text/html;charset=UTF-8",
      },
    });
  },

} satisfies ExportedHandler;

from js import Response, Headers


async def on_fetch(request):
    html_content = ""
    html_style = "body{padding:6em font-family: sans-serif;} h1{color:#f6821f;}"


    html_content += "<p> Colo: " + request.cf.colo + "</p>"
    html_content += "<p> Country: " + request.cf.country + "</p>"
    html_content += "<p> City: " + request.cf.city + "</p>"
    html_content += "<p> Continent: " + request.cf.continent + "</p>"
    html_content += "<p> Latitude: " + request.cf.latitude + "</p>"
    html_content += "<p> Longitude: " + request.cf.longitude + "</p>"
    html_content += "<p> PostalCode: " + request.cf.postalCode + "</p>"
    html_content += "<p> Region: " + request.cf.region + "</p>"
    html_content += "<p> RegionCode: " + request.cf.regionCode + "</p>"
    html_content += "<p> Timezone: " + request.cf.timezone + "</p>"


    html = f"""
    <!DOCTYPE html>
      <head>
        <title> Geolocation: Hello World </title>
        <style> {html_style} </style>
      </head>
      <body>
        <h1>Geolocation: Hello World!</h1>
        <p>You now have access to geolocation data about where your user is visiting from.</p>
        {html_content}
      </body>
    """


    headers = Headers.new({"content-type": "text/htmlcharset=UTF-8"}.items())
    return Response.new(html, headers=headers)