files/en-us/web/api/response/headers/index.md
{{APIRef("Fetch API")}}{{AvailableInWorkers}}
The headers read-only property of the
{{domxref("Response")}} interface contains the {{domxref("Headers")}} object associated
with the response.
A {{domxref("Headers")}} object.
In our Fetch Response example (see Fetch Response live) we create a new {{domxref("Request")}} object using the {{domxref("Request.Request","Request()")}} constructor, passing it a JPG path. We then fetch this request using {{domxref("Window/fetch", "fetch()")}}, extract a blob from the response using {{domxref("Response.blob")}}, create an object URL out of it using {{domxref("URL.createObjectURL_static", "URL.createObjectURL()")}}, and display this in an {{htmlelement("img")}}.
Note that at the top of the fetch() block, we log the response headers to the console.
const myImage = document.querySelector("img");
const myRequest = new Request("flowers.jpg");
fetch(myRequest)
.then((response) => {
console.log("response.headers =", response.headers);
return response.blob();
})
.then((myBlob) => {
const objectURL = URL.createObjectURL(myBlob);
myImage.src = objectURL;
});
{{Specifications}}
{{Compat}}