fullstack_study/defaultParam.html at main · jihodaddy/fullstack_study · GitHub

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<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>자바스크립트 디폴트 매개변수</title>
		<script type="text/javascript">
			function rect(width=10, height=20){
				document.write("width : " + width+", ");
				document.write("height: " + height+ "<br>");
				return width * height;
			}

			document.write(rect()+"<br>");
			document.write(rect(30)+"<br>");
			document.write(rect(100,200)+"<br>");

			document.write("<hr>");

			function showInfo(name, year=4, score){
				document.write("name : " + name + "<br>");
				document.write("year: " + year+ "<br>");
				document.write("score: " + score+ "<br>");
			}

			/* document.write(showInfo());
			document.write(showInfo("홍길동"));
			document.write(showInfo("홍길동", 80)); */

			/* console.log(showInfo());
			console.log(showInfo("홍길동"));
			console.log(showInfo("홍길동", 80)); */

			showInfo();
			showInfo("홍길동");
			showInfo("홍길동", 80);	//80이 두번째 year 로 전달

			document.write("<hr>");

			function showInfo(name, score, year=4){
				document.write("name : " + name + "<br>");
				document.write("year: " + year+ "<br>");
				document.write("score: " + score+ "<br>");
			}

			showInfo();
			showInfo("홍길동");
			showInfo("홍길동", 80);


		</script>
	</head>
	<body>

	</body>
</html>