在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

ok 只读特性在 响应 interface contains a Boolean stating whether the response was successful (status in the range 200-299) or not.

句法

var myOK = response.ok;
					

值

A 布尔 .

范例

In our Fetch Response example (见 Fetch Response live ) we create a new Request 对象使用 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> .

注意： 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;
  });
});
					

规范

规范	状态	注释
Fetch The definition of 'ok' in that specification.	实时标准	初始定义

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
ok	Chrome 42 42 41 Disabled Disabled From version 41: this feature is behind the Experimental Web Platform Features preference. To change preferences in Chrome, visit chrome://flags.	Edge 14	Firefox 39 39 34 Disabled Disabled From version 34: this feature is behind the dom.fetch.enabled preference. To change preferences in Firefox, visit about:config.	IE No	Opera 29 29 28 Disabled Disabled From version 28: this feature is behind the Experimental Web Platform Features preference.	Safari 10.1	WebView Android No	Chrome Android No	Firefox Android No	Opera Android 29 29 28 Disabled Disabled From version 28: this feature is behind the Experimental Web Platform Features preference.	Safari iOS 10.3	Samsung Internet Android No

图例

完整支持

完整支持

不支持

不支持

实验。期望将来行为有所改变。

实验。期望将来行为有所改变。

用户必须明确启用此特征。

用户必须明确启用此特征。

另请参阅

• ServiceWorker API
• HTTP access control (CORS)
• HTTP

元数据

• 最后修改： 2019 年 3 月 23 日

相关话题

1. 响应
2. 构造函数

   1. Response()
3. 特性

   1. body
   2. bodyUsed
   3. headers
   4. ok
   5. redirected
   6. status
   7. statusText
   8. type
   9. url
   10. useFinalURL
4. 方法

   1. arrayBuffer()
   2. blob()
   3. clone()
   4. error()
   5. formData()
   6. json()
   7. redirect()
   8. text()