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メモ: fetch async awaitの例

Last updated at Posted at 2021-07-18

サンプル1

123.PNG

sample.html
<head>
	<script>
	function $(id) {
		return document.getElementById(id);
	}
	function init() {
		$("summary.title").innerHTML = "";
		$("error").innerHTML = "";
	}
	function setData(json) {
		$("summary.title").innerHTML = json[0]["summary"]["title"];
	}
	const getIsbn = async () => {
		try {
			init();
			var url = 'https://api.openbd.jp/v1/get?isbn=' + $("isbn").value;
			const response = await fetch(url);
			const json = await response.json();
			setData(json);
			console.log(json);
		} catch (error) {
			$("error").innerHTML = error;
		} finally {
			//setLoading(false);
		}
	}
	</script>
</head>
<body>

	ISBN番号 <input type="text" id="isbn" value="978-4-7741-9690-9" />
	<button onClick="getIsbn();">ISBN検索</button>
	<li> タイトル <span id="summary.title"></span> </li>
	<li> エラーメッセージ <span id="error"></span> </li>
  • ISBNの例
    • 978-3-16-148410-0

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