files/en-us/web/api/response/ok/index.md
{{APIRef("Fetch API")}}{{AvailableInWorkers}}
The ok read-only property of the {{domxref("Response")}} interface contains a Boolean stating whether the response was successful (status in the range 200-299) or not.
A boolean value.
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] At the top of the
fetch()block we log the responseokvalue to the console.
const myImage = document.querySelector("img");
const myRequest = new Request("flowers.jpg");
fetch(myRequest).then((response) => {
console.log(response.ok); // returns true if the response returned successfully
response.blob().then((myBlob) => {
const objectURL = URL.createObjectURL(myBlob);
myImage.src = objectURL;
});
});
{{Specifications}}
{{Compat}}