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<!DOCTYPE html>
<html lang="ko">

<head>
	<meta charset="UTF-8">
	<title>JavaScript Object Method</title>
</head>

<body>

	<h1>객체의 hasOwnProperty() 메소드</h1>

	<script>
		function Dog(color, name, age, family) {
			this.color = color;
			this.name = name;
			this.age = age;
			this.family = family;
			this.breed = function() { return this.color + " " + this.family; }
		}
		var myDog = new Dog("검정색", "곰", 3, "불독");

		document.write(myDog.hasOwnProperty("color") + "<br>");	// true
		document.write(myDog.hasOwnProperty("breed") + "<br>");	// true
		document.write(myDog.hasOwnProperty("class"));			// 상속받은 속성이므로 false를 반환함.
	</script>
	
</body>

</html>

​x
 
<!DOCTYPE html>
<html lang="ko">
​
<head>
    <meta charset="UTF-8">
    <title>JavaScript Object Method</title>
</head>
​
<body>
​
    <h1>객체의 hasOwnProperty() 메소드</h1>
​
    <script>
        function Dog(color, name, age, family) {
            this.color = color;
            this.name = name;
            this.age = age;
            this.family = family;
            this.breed = function() { return this.color + " " + this.family; }
        }
        var myDog = new Dog("검정색", "곰", 3, "불독");
​
        document.write(myDog.hasOwnProperty("color") + "<br>"); // true
        document.write(myDog.hasOwnProperty("breed") + "<br>"); // true
        document.write(myDog.hasOwnProperty("class"));          // 상속받은 속성이므로 false를 반환함.
    </script>
    
</body>
​
</html>