Response.ok
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2017.
语法
var myOK = response.ok;
值
示例
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 that at the top of the fetch() block we log the response ok value to the console.
js
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;
});
});
规范
| Specification |
|---|
| Fetch Standard # ref-for-dom-response-ok② |
浏览器兼容性
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