'hasOwnProperty()' Example

'hasOwnProperty()' Example : hasOwnProperty : Object Oriented JAVASCRIPT DHTML TUTORIALS

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'hasOwnProperty()' Example



    
<html>
<body>
<script language="javascript">
function Object(firstName, lastName){
   this.firstName = firstName;
   this.lastName = lastName; 
} 
function function1(){
   myObject.age = 34;
   alert(myObject.age()); 
} 
function function2(){
   myObject.favoriteColor = 'Blue';
   alert(myObject.favoriteColor); 
} 
var myObject = new Object('first name', 'last name');
</script>
<button onclick="function2();">Add property</button>
<button onclick="function1();">Add method</button>
<button onclick="alert(myObject.constructor);">Constructor</button>
<button onclick="alert(myObject.isPrototypeOf(myObject));">PrototypeOf</button>
<button onclick="alert(myObject.hasOwnProperty('lastName'));">HasProperty</button>
</body>
</html>