Response.ok
Experimental: 这是一个实验中的功能
此功能某些浏览器尚在开发中,请参考浏览器兼容性表格以得到在不同浏览器中适合使用的前缀。由于该功能对应的标准文档可能被重新修订,所以在未来版本的浏览器中该功能的语法和行为可能随之改变。
Response
接口的只读属性 ok
包含一个布尔值,表明响应是否成功(状态码在 200-299 范围内).
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
(en-US), 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.
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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