The ok
read-only property of the Response
interface contains a Boolean stating whether the response was successful (status in the
range 200-299) or not.
Syntax
var myOK = response.ok;
Value
A Boolean
.
Example
In our Fetch
Response example (see Fetch Response live)
we create a new Request
object using the
Request()
constructor, passing it a JPG path. We then
fetch this request using fetch()
, extract a blob from
the response using Body.blob
, create an object URL out of it using
URL.createObjectURL
, and display this in an <img>
.
Note: at the top of the fetch()
block we log the
response ok
value to the console.
var myImage = document.querySelector('img');
var myRequest = new Request('flowers.jpg');
fetch(myRequest).then(function(response) {
console.log(response.ok); // returns true if the response returned successfully
response.blob().then(function(myBlob) {
var objectURL = URL.createObjectURL(myBlob);
myImage.src = objectURL;
});
});
Specifications
Specification | Status | Comment |
---|---|---|
Fetch The definition of 'ok' in that specification. |
Living Standard | Initial definition |
Browser compatibility
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