JavaScript-Introductions/functionsReturn.html at master · renan-eng/JavaScript-Introductions · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Função com um retorno simples</title>
	<style>
		div{display: flex; flex-direction: column;}
		h1{margin: 25px auto; width: 100%; background-color: darkgoldenrod; text-align: center; font-size: 24px; font-family: sans-serif; color: white;}

		#button{margin: 0px auto; width: 200px;font-size: 24px;}
	</style>
</head>
<body>
	<div>
		<h1>JS: FUNÇÕES</h1>
		<input type="button" id="button" value="Mostrar nome">
	</div>

	<script>
		function singleReturn(firstName, lastName) {
			return "Your first name: " + firstName + "\n" + "Your last name: " + lastName;
		}

		function multiReturn(firstName, lastName, age){

		}

		document.getElementById('button').onclick=function(){
			console.log(singleReturn("Renan", "Eduardo"));
		}
	</script>
</body>
</html>