Response.statusText

Response 接口的 statusText只读属性包含与状态代码相对应的状态消息（例如，对于200可以确定）。

let myStatusText = response.statusText;

A ByteString.

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 statusText value to the console.

var myImage = document.querySelector('img');

var myRequest = new Request('flowers.jpg');

fetch(myRequest).then(function(response) {
  console.log(response.statusText); // returns "OK" if the response returned successfully
  response.blob().then(function(myBlob) {
    var objectURL = URL.createObjectURL(myBlob);
    myImage.src = objectURL;
  });
});

[1] This feature is implemented behind a preference.

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