応答オブジェクトメソッド


Response.ok


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.

Value


A boolean value.

Response.json()


The json() method of the Response interface takes a Response stream and reads it to completion. It returns a promise which resolves with the result of parsing the body text as JSON .
Note that despite the method being named json() , the result is not JSON but is instead the result of taking JSON as input and parsing it to produce a JavaScript object.
JSONではなく、入力出力javascriptオブジェクトとしてJSONを受信する方法です.

Syntax

response.json().then(data => {
  // do something with your data
});
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Parameters


None.

Return value


A Promise that resolves to a JavaScript object. This object could be anything that can be represented by JSON — an object, an array, a string, a number...