// force the Browser to Show a Download Prompt function handleRequest(request, response) { let type = "image/png"; let filename = "hello.png"; request.queryString.split("&").forEach(val => { var [key, value] = val.split("="); if (key == "type") { type = value; } if (key == "name") { filename = value; } }); response.setHeader("Cache-Control", "no-cache", false); response.setHeader("Content-Disposition", `attachment; filename=${filename}`); response.setHeader("Content-Type", type); response.write("🙈🙊🐵🙊"); }