「fetch」と「await fetch」について **()** * * * fetch var response = fetch('/test').then(function(response) { return response.json(); }).then(function(responseJson) { }); * * * await fetch (async () => { const response = await fetch('/test'); await response.json(); })(); * * * fetch XMLHttpReques Promise

async/await PromiseJavaScriptCallbackPromisePromise`async/await`

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