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<title>JavaScript in Operator</title>
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<pre> <!-- Use pre element for work document.writeln() method -->
<script type="text/javascript">
var myObj = new Object(); // or you can write: var myObj = new Object;
myObj.name = "Opal Kole";
myObj.address = "63 street Ct.";
myObj.age = 48;
myObj.married = true;
document.writeln("name" in myObj); // Returns true
document.writeln("birthdate" in myObj); // Returns false
// birthdate propery not in myObj
document.writeln("address" in myObj); // Returns true
document.writeln("age" in myObj); // Returns true
document.writeln("married" in myObj); // Returns true
</script>
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