await - JavaScript - MDN - Mozilla async functionの実行を一時停止し、関数のPromiseの結果を待つ。 fetchはPromiseを返すので相性が良い。 サンプル お天気のAPI(OpenWeatherMap)を叩くサンプル。 まずは定数を準備。 const API_KEY = '${API_KEY}'; const CITY = 'Tokyo'; const URL = `http://api.openweathermap.org/data/2.5/forecast?q=${CITY},jp&units=metric&APPID=${API_KEY}`;
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